In browser extension, disabling auto capitalize first letter, applies only to one language, the rule is still “on” for other languages, and it is impossible to disable it.
Steps to reproduce:
Write a sentence in, for example, English starting with a lowercase letter. Disable the rule (this works as intended).
Write a sentence in, for example, German starting with a lowercase letter. The rule is still present, and disabling it does nothing.
Thanks for the report. I can reproduce the issue, and I have created an issue for this in our bug tracker.