[Libreoffice-bugs] [Bug 143370] New: Calc: Vertical scrollbar does not slide on desktop computer.

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=143370

            Bug ID: 143370
           Summary: Calc: Vertical scrollbar does not slide on desktop
                    computer.
           Product: LibreOffice
           Version: 6.4.7.2 release
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: unkle.stephen at gmail.com

Description:
On Build ID: 1:6.4.7-0ubuntu0.20.04.1 running on Linux Mint 20.1 or 20.2, I
cannot use my mouse to slide the vertical scroll.  Mouse wheel works fine but
no good for big number of lines. 

Steps to Reproduce:
1.Load a file. 
2.Place mouse over vertical scrollbar 'handle' and hold down left mouse button. 
3.Slide mouse up or down.  
4.Note that file doesn't move. 

Actual Results:
File does not move at all. 

Expected Results:
File should scroll easily up and down. 


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
I note that this problem very occasionally vanishes for a brief time.  It 
 can behave like the computer is under a huge load and can spare only a cycle
or two for scrolling.  I wasn't so lucky today.  But today, in a unique
occurrence, I closed the search under the sheet and the scrollbar handle
suddenly illuminated and I was able to move it.  Five seconds later, things
were back to normal and I could not repeat this trick. 
To clear the problem, I tried uninstalling and reinstalling the whole
Libreoffice Suite, using the software manager provided in Linux Mint 20.1. 
Then I tried upgrading to Linux Mint 20.2.  Nothing changed in either case. 
The particular file I was looking at had about 8000 lines, mostly just static
numbers, very few formulas. 
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 4600 (HSW GT2)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 20.2.6
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 20.2.6
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 20.2.6
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10
OpenGL ES profile extensions:
Other notes:
1. Horizontal scroll is equally affected. 
2. Running in safe mode does not affect the problem.

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