Origin 2026b SR2 Bug Fixes

ORG-34225

Normal curve disappears when Y scale is set to Log10 in Box chart

1. new worksheet and fill uniform random data in one column

2. select the column to plot a box chart

3. Add the normal distribution curve

4. Open Axis dialog of Y axis and change the scale type to log10. Click ok button.
   ==> The normal curve disappeared.

ORG-33948

Show Ellipse/Convex Hull for Subset wrongly ON from old theme

1. Make a theme with Show Ellipse turn on. Save theme as MyLine2026

2. Press F7 to open Theme Organizer dialog, on Graph tab, right click on MyLine2026 and select Set as System Theme, close dialog.

3. Create a single line plot with 2 cols.

==> Ellipse/Convex Hull for Subset was ON.

For user’s theme file, only modify value below as 0

Root.Page.Layers.All.LinePlots.LinePlot1.Centroid.ShowEllipse

ORG-34091

Duplicating worksheet lost operation lock

Fill workbook with data, do an Integrate on column B. Then duplicate the sheet.
==> No lock shows in the duplicated sheet.

Bug introduced in 2026b SR0, and fixed in Origin 2026b SR2.

ORG-33997

Mirror column failed with Text column

For project file saved in older version, it may contains dataset having different storage info. Then copy the column and paste as mirror column may failed.

Fixed in Origin 2026b SR2.

ORG-34017

Output sheet fails to carry categorical info from source mirror column

1. Import Samples\Graphing\Categorical Data.dat

2. Set column C and D as categorical.

3. Click the Mirror to New Book button to create a mirroring sheet.

4. Active the created book, highlight column A and B, then open Stack Columns dialog.

5. Check Include Other Columns checkbox, column range C:D is filled.

6. Click OK.
   ==> In the stack column result sheet, no categorical info of other columns in column A and B.

Fixed in Origin 2026b SR2.

ORG-34016

Discrete Frequency with mirror column fails to sort by categorical order

1. Import Samples\Graphing\Categorical_Data_1.dat

2. Set column A as categorical, then set categories sort as Ascending.

3. Mirror sheet to new book.

4. Active the mirroring book, highlight column A to open Discrete Frequency dialog.

5. Choose Sort Data by Categorical Order.

6. Click OK.
   ==> Got OC error 24.

Fixed in Origin 2026b SR2.

ORG-34014

CategoricalMap() failed on Mirror Column

Suppose column B in workbook is mirror column and set as categorical, run below OC code

==> cm2 is null

Also, new a workbook, fill column A with text values, below OC code cannot works.

Fixed in Origin 2026b SR2.

ORG-34031

Wrong digit in mirror book after moving column in source sheet

1. Prepare a workbook, the 1st column is Date format, 2nd column is row number with Text & Numeric format.

2. Mirror sheet to new book.

3. Active the source book, move column A to the right.
   ==> In the mirroring sheet, digit number in column A is changed to 6.

Fixed in Origin 2026b SR2.

ORG-34129

Crash when paste categorical to mirror column

Copy the categories info from the Categories label cell of a column, paste to the Categories label cell of a mirror column, Origin will crash.

Fixed in Origin 2026b SR2.

ORG-34113

Operation with mirror column fails to recalculate in analysis template

1. Do a linear fit with data.

2. Active the FitLinearCurve1 sheet, copy the 1st two columns for example.

3. Add a new sheet, right-click on column A and choose Paste as Mirror Column.

4. Add a new column, set column value with formula like “A+B”.

5. Save the book as an analysis template.

6. Load the template, fill data in source data sheet, recalculate.
   ==> The SCV operation does not recalculate.

Fixed in Origin 2026b SR2.

ORG-34226

Smooth tool fail to get masked value when recalculation

1. Open script window,execute following script.

   Newbook; col(A)=data(1,32); col(B)=col(A); col(B)<3>=1; //mask cell smooth -r 2 iy:=[Book2]Sheet1!(A,B); col(B)[1]=1;

2. Click green lock in result column col(C) and select recalculate.
   ==>missing value in col(C) is removed.

Fixed in Origin 2026b SR2.

ORG-33834

Frequency Count On Date Column Wrong

Wrong result if Frequency Count On Date Column with time interval like 1day.

And Origin will be not responding if with time interval like hour.

Issue exists since 2024b. Fixed in Origin 2026b SR2.

APPS-2818

Wrong UB/LB plot for Cumulative Failure Plot

1. Highlight any data with Nonparameteric Distribution Analysis tool

2. Go to Estimation tab, set Interval Type as Upper Bound.

3. Go to Plots tab and check all check box. Click OK.
   ==> Check the Cumulattive Failure Plot, the UB plot(All plot data are 1 or 0) is obvisouly wrong

Issue exists since 2026b Sr0, fixed in 2026b Sr2

APPS-2832

SPC compatibility issues on using project variable on dialog

1.Define a project variable.

2.Use it on dialog of SPC tools(for example: Lower Spec box on Normal Capability Analysis dialog).

==>Failed to use the project variable.

Fixed in Origin 2026b SR2.

APPS-2860

SPC did not trigger recalculate with named range variable

1.Do a Normal Capability Analysis with named range variable.

2.Change the value of range variable.

==>Failed to trigger recalculate.

Fixed in Origin 2026b SR2.

APPS-2862

Multiple Variables CA failed to save Lower Spec to theme

Failed to save Lower/Upper Spec, Target, Parameters of Multiple Variables CA to theme.

Fixed in Origin 2026b SR2.

APPS-2839

SPC more compatibility issue on Analysis Template

1.Run Origin 2026b SR0 with SPC(V2.50).

2.Plot a control chart, duplicate the graph in report sheet, and embedded into Book as Sheet.

3.Save the book as analysis template.

4.Open it in Origin 2026b SR1, and import data to recalculate.

==>No plot in the duplicated graph.

Fixed in Origin 2026b SR2.

APPS-2850

Design of Experiments: Optimizing response gets the wrong results (solution)

Optimizing response gets the wrong results if analyze multiple response.

Fixed in Origin 2026b SR2.

APPS-2855

Design of Experiments: Optimize for mixture design gets the wrong result

Optimize for mixture design gets the wrong result if inverse component terms are included in model.

Issue existed sicne Origin 2026b SR0. Fixed in Origin 2026b SR2.

ORG-34120

One/Two Sample Poisson Rate Test: Origin crashes if size of sample and frequncy input data are not same.

Issue existed in Hypothesis Testing: One/Two Sample Poisson Rate Test tool.

Issue existed sicne Origin 2026b SR0. Fixed in Origin 2026b SR2.

APPS-1751

Design of Experiments: X column can't be selected process variables when custom design

When customing designs, the X column should be listed in the Available List for factor, response, process variable…

Fixed in Origin 2026b SR2

APPS-2397

Consistent GUI for Generalized Linear Mixed Model

Rename following labels.

1. Dependent Variable → Response

2. Independent Variable → Predictors

3. Reference Factor Level → Reference Level

APPS-2845

Gage RnR Expanded x-Function issue in 2026bSR1

Gage_RnR_Expanded x-function with error because of using mirror column.

Fixed in Origin 2026b SR2

APPS-2858

Gage Study More Issues

1. Hide Part*Operator Interaction Chart in Nested Gage Study

2. Missing %Tolerance column for Only Lower/Upper Spec for Process Tolerance

3. Graph Label Overlapping issue

Fixed in Origin 2026b SR2

APPS-2856

Equivalence Test dialog fails to open in Origin 2026b

Equivalence Test dialog fails to open in Origin 2026b

Fixed in Origin 2026b SR2

ORG-34141

Origin crashed when import large ascii data by start new rows

1.Create a worksheet and fill with large data(like 750000 rows*20 columns).

2.Use Import Wizard to import data into new rows.

==>Origin crashes.

Fixed in Origin 2026b SR2.

ORG-34155

Crash with long Post Import Script

1.Create a data connector.

2.Click the connector icon and select Post Import Script…

3.Try to type a long Labtalk Script.

==>Origin crashes.

Fixed in Origin 2026b SR2.