List of elements being scrolled automatically when resizing #82148

New Issue

Sebastien Larocque · 2020-10-27T15:33:19+01:00

2020-10-27 15:33:19 +01:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 452.06

Blender Version
Broken: version: 2.91.0 Beta, branch: master, commit date: 2020-10-23 17:33, hash: 70cc0d7121
Worked: Never (2.8+)

Short description of error
List of elements being scrolled automatically when resizing

Exact steps for others to reproduce the error

Open the file “ResizeScrollingIssue.blend” attached here.
You should have the Outliner already resized in the Modeling tab ready to reproduce the problem.
Basically, there is a list of elements longer than the available space to show them all.
Scroll down to the end of the list with the mouse over and using the mouse wheel.
Resize the Outliner downward, but not completely. We need to leave many elements still hidden at the top of the list.
Resize the Outliner upward.
As the Outliner is being resized upward, the list of elements is being scrolled down.

Normally, we expect the list to stay aligned with the top visible element unless the last element is being dragged down by resizing downward. This problem is minor, but certainly not the standard way that user interfaces are created with the default controls (at least on Windows). Just resizing the Outliner upward and downward very slightly back and forth makes the list scroll up completely.

This problem seems the behavior of all lists. To be sure that it was not specifically the Outliner, I also tried to reproduce the problem in the “Blender File View” (menu File | Open). If there is a list of files and folders longer than the visible part, it is possible to reproduce the problem with the steps described above.
I also included the screenshots showing what I got with the example file here.

Resizing the whole Blender application window also reproduces this problem as the controls are also resized.

ResizeScrollingIssue.blend

{F9111180 size=full}

{F9111182 size=full}

{F9111184 size=full}

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 452.06 **Blender Version** Broken: version: 2.91.0 Beta, branch: master, commit date: 2020-10-23 17:33, hash: `70cc0d7121` Worked: Never (2.8+) **Short description of error** List of elements being scrolled automatically when resizing **Exact steps for others to reproduce the error** * Open the file “ResizeScrollingIssue.blend” attached here. * You should have the Outliner already resized in the Modeling tab ready to reproduce the problem. * Basically, there is a list of elements longer than the available space to show them all. * Scroll down to the end of the list with the mouse over and using the mouse wheel. * Resize the Outliner downward, but not completely. We need to leave many elements still hidden at the top of the list. * Resize the Outliner upward. * As the Outliner is being resized upward, the list of elements is being scrolled down. Normally, we expect the list to stay aligned with the top visible element unless the last element is being dragged down by resizing downward. This problem is minor, but certainly not the standard way that user interfaces are created with the default controls (at least on Windows). Just resizing the Outliner upward and downward very slightly back and forth makes the list scroll up completely. This problem seems the behavior of all lists. To be sure that it was not specifically the Outliner, I also tried to reproduce the problem in the “Blender File View” (menu File | Open). If there is a list of files and folders longer than the visible part, it is possible to reproduce the problem with the steps described above. I also included the screenshots showing what I got with the example file here. Resizing the whole Blender application window also reproduces this problem as the controls are also resized. [ResizeScrollingIssue.blend](https://archive.blender.org/developer/F9111177/ResizeScrollingIssue.blend) {[F9111180](https://archive.blender.org/developer/F9111180/1_Outliner_Before_Resizing_Downward.jpg) size=full} {[F9111182](https://archive.blender.org/developer/F9111182/2_Outliner_After_Resizing_Downward.jpg) size=full} {[F9111184](https://archive.blender.org/developer/F9111184/3_Outliner_After_Resizing_Upward.jpg) size=full}

Sebastien Larocque commented

2020-10-27 15:33:19 +01:00

Added subscriber: @SebBlender