After certain operations, mostly related to subtools (like delete), a few or many custom buttons sometimes disappear. Manually restoring the UI brings them back until, well, they vanish a couple of clicks later. Continuing to use some of the buttons in the custom UI then crashes ZBrush. I read in an old post that the Delete (Subtool) button is known for misbehaving like that.
Is there a known and painless workaround for the disappearing buttons? Or even for the crash-upon-delete annoyance?
Cheers
in case this helps: ZBrush 2019, Win10, HP Z820 with loads of cores and a ton of ram