In reply to Franci Hoffman.

Many of the issues with block widgets will come down to theme support, unfortunately. Of course, there are bugs in the block widgets system itself, especially based on the problems you're having. I've called it trying to fit a round peg (blocks) into a square hole (dynamic sidebars). They are fundamentally different systems under the hood.

I advocate sticking with classic widgets. Then, at some point down the line, move to a block-based theme. The traditional sidebar/widget system issues won't exist in this scenario. It is 100% blocks.