Tried to help and when I hit the "settings" button in the BIAB-VST, Reaper crashed.
Others are reporting the the VST3 is a problem in current BIAB-VST with multiple DAWs. I would suggest you try the VST2 - except.... I was just running Reaper with the BIAB-VST3 and it was working fine. Then when I tried to reproduce you report, it crashed as soon as I hit the "settings" button.

Sorry, not much else I can suggest at this time other than to suggest the menus and windows which open in the BIAB-VST should remember where and on which monitor they were saved.


BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6