Can uBO crash a browser?

No, browser and website crashes have to be reported to browser devs, uBO is HTML/CSS/JS, it's not supposed to crash the browser, the same way a webpage is not supposed to crash the browser, see:

• https://github.com/uBlockOrigin/uBlock-issues/issues/1171#issuecomment-662520037
• https://github.com/uBlockOrigin/uBlock-issues/issues/1530#issuecomment-801404412
• https://github.com/uBlockOrigin/uBlock-issues/issues/2074#issuecomment-1086288841
• https://github.com/uBlockOrigin/uBlock-issues/issues/2467#issuecomment-1403214770
• https://github.com/uBlockOrigin/uBlock-issues/issues/2471#issuecomment-1408861964
• https://github.com/uBlockOrigin/uBlock-issues/issues/2851#issuecomment-1751669794
• https://github.com/uBlockOrigin/uBlock-issues/issues/2882#issuecomment-1769079212
• https://github.com/uBlockOrigin/uBlock-issues/issues/3205#issuecomment-2053618513
• https://github.com/uBlockOrigin/uAssets/issues/8058#issuecomment-712962803
• https://github.com/uBlockOrigin/uAssets/issues/16613#issuecomment-1415835892
• https://github.com/uBlockOrigin/uBlock-issues/issues?q=is%3Aissue+in%3Atitle+crash+label%3Ainvalid%2Cexternal