If you are experiencing this specific problem (toolbar sometimes becomes blank with a multi-monitor setup) with Band-in-a-Box 2019, could you test out this new build (pre-release) and let us know if it is fixed.

Note this is a pre-release build. You can install the latest shipping patch afterwards if you need to revert back to the shipping build.

https://nn.pgmusic.com/pgfiles/support/patches/bb2019_win_update_build632.exe


Andrew
PG Music Inc.