Unable to complete the cloudflare turnstile captcha unless disabling the extension from the broswer

[GrassBlock1]

I'm unable to login the cloudflare dashboard with the extension enabled because the captcha simply flashed for a second after clicking and ask me to verify again.

Update: any website uses cloudflare turnstile seems not to be work either

I tried with a clean profile of Firefox 148.0b3 with stock settings of canvas blocker:

Screencast_20260119_114638.mp4

I also tried to switch presets of canvasblocker to Convenient on my main profile since I use Stealth for everyday use, but this doesn't work out.

I tried to temporarily disable the canvasblocker using the switch:

Screencast_20260119_115933.mp4

And I tried the workaround from #710 (comment) , the problem still exists. What I can only do now to solve this is to add challenges.cloudflare.com to the whitelist.

Messages from the devtools console:

Is there any other solutions for this? Any help is appreciated.

[GrassBlock1]

After some times of debugging, I find out the solution for now:

Whitelisting the SVG API protection for challenges.cloudflare.com (in the "APIs" tab of the CB settings, by clicking the small black arrow to expand the SVG API's site-specific settings, typing/pasting the URL in the text field and clicking the "+" symbol, and then uncheck the ✅ beside it makes it work again, without whitelisting more than (for now) necessary.

Screencast_20260120_212153.mp4

[kkapsner]

Thanks for the deep investigation. Will put this in the convenience preset for #783.