LR Classic 14.3. shuts-down everytime I try to use the "mask" function

Known issue. Do not run MacOS beta software if you want to run Lightroom Classic. The current version of Lightroom Classic is not compatible with MacOS Sequoia.

P.S. Please do not post the same question in two forums.

Everytime I want to use "mask" and click on this symbol, LR Classic shuts down immediately. It happens since approx. 2 weeks, it appears with any catalogues and fotos.

- I use the latest Mac iOs version: macOS Sequoia Beta 15.0
- I use the latest LR Classic version: 13.4
- I have already tried to create new catalogues
...nothing helps.

The shut-down problem occurs ONLY when I try to use the "mask" function, using all other functions is ok.

Does anyone have the same problem, can help or give tipps what to do??
Many thanks in advance!