[Bug 46004] New: SimSig: scroll bars in Options window do not render

https://bugs.winehq.org/show_bug.cgi?id=46004

Bug ID: 46004
           Summary: SimSig: scroll bars in Options window do not render
           Product: Wine
           Version: 3.17
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 62572
  --> https://bugs.winehq.org/attachment.cgi?id=62572
screenshot of failed scroll bars

In SimSig's Options dialog, one page of configuration options are controlled
using scrollbars. See:
https://www.simsig.co.uk/Wiki/Show?page=usertrack:ssrun:func:f3:optionsfailu...

Since Wine 3.17, the scroll bars on this tab fail to initialise, have corrupted
rendering, and do not function. [See attached screenshot.]
The bug is also present in 3.18 and the master branch.

This error message is produced when the window tab containing the scroll bars
is selected:
0009:warn:scroll:SCROLL_GetInternalInfo Cannot initialize nBar=2

I have bisected this error to be caused by commit
b8ef42c9fd165da5c31d8f68f2ae39b77e9101f5. Reverting this commit on master
resolves this issue for SimSig.

Full reproduction steps:
Installation:
1. Download from [free registration required]:
https://www.simsig.co.uk/File/Details/852
2. Install using standard installer. [Launch checkbox on final screen will
fail.]
3. Execute C:\Program Files\SimSig\SimSigLoader.exe
4. Click 'Check for updates'
5. Click 'Install/Update Automatically' [or manually, minimum of 1 simulation
is required].

Reproduction:
1. Execute C:\Program Files\SimSig\SimSigLoader.exe
2. Click 'Start a new simulation'.
3. Select any simulation.
4. Click Start.
5. Select from the menu Show > Options [F3].
6. Select the 'Failures' tab.
7. Observe broken scrollbars.