Hi @Yoji
That is not insignificant. What you’re speaking of is neither developed or supported by Maxon or the ZBrush development team. We make no guarantees it won’t cause issues.
That said, please recall that the ‘B’ key is context sensitive and only activates the 3D brush pop up when there is an active 3D tool in edit mode.
Assuming your B key is actually sending the correct ID (different keyboard and language settings can affect the assignments of the keys) you are most likely looking at either a corrupt hotkeys file, or some sort of key conflict on your system with another running program, device, or OS feature.
You can check for the former easily enough by deleting your hotkeys file from your ZBrushData2023 ( or ZBrushData2022 depending on the version) folder.
On Windows this is located at:
C:\Users\Public\Public Documents\ZBrushData2023
On Mac this is:
\Users\Shared. The easiest way to get to \Users is to be in the Finder and click Go at the top of the screen, then Computer in the pull-down menu. Now in the window that opens, double-click on Macintosh HD. You’ll then see Users as one of the folders.
In the ZBrushData2023 folder, navigate to ZStartup/Hotkeys, and move the startuphotkeys.txt file you find there out of the folder to another location. This file will only be present if you have a custom key assignment. Then restart ZBrush.
The next time ZBrush starts, it should start with the default hotkeys. Load a file like the dog.zpr so you have an active 3d tool in edit mode, and see if the B key works again. If it does, then the issue is with with your file, and any custom key assignments will need to be re-created. If it does not, then the issue is not with the configuration file, and you can restore it to the original location.
Otherwise, the B key works as expected in a properly functioning installation of ZBrush. If it does not on your system, it is likely that something else on the system is preventing it from working. This could absolutely be caused by a third party plugin, but also by any other running program, device, or OS feature that is influencing B key behavior.
Please contact ZBrush support for any technical issues with your ZBrush installation. Please be sure to have upgraded to the most recent version of ZBrush available to you so we can be sure you’re not being affected by some sort of issue with the obsolete version.
Thank you!