I'm using 1Password to autofill credentials.
Often, 1Password detects the correct credentials to login to the page, but no matter how many times I click on it they aren't filled in.
The only thing that works is reloading the page (sometimes two or three times) before the credentials get filled in and I can continue logging in.
(Not sure if this issue fits in this threat, please advise if I need to create a separate bug report.)