v6.6.7 Stable
Recently upgraded from v3.3.3
I'm writing a post on my blog. Switched to markup to edit some stuff. Switched back to wysiwyg and got a pop-up about some formatting potentially being lost. I checked the box indicating that I don't want to see that warning again.
Next post, did the same thing. Switched to markup and edited some stuff. Now I want to switch back to wysiwyg, but the button doesn't do anything. I click it and nothing happens. Literally, it doesn't do anything at all.
@spiceygas2 stopping notifications (alerts and confirms) is a browser's behaviour, not b2evolution's.
b2evolution expects for your confirmation before to switch editors and you can't override that, so the notification must be enabled. But, since you disabled pop-up notifications, you can't confirm the action and the switch doesn't continue.
Closing and re-opening your browser should be enough. But if it's not, you may also need to reset the browser settings. This is an example of how to do it in Chrome: https://support.google.com/chrome/answer/3296214?hl=en (be careful with potential lost of information).
What browser are you using?