Since a recent update, billboard guis no longer fire mouse events (mouse enter, mouse leave, mouse clicked) attached is a test place that showcases this with 100% reproducibility. The button would normally fire the events in the script and print an output but do not anymore.
This is especially important to me because it completely breaks my game’s chat system
I can confirm this is an issue, I thought it was just CoreGui affected by this and ended up writing my own implementation for the Light Editor. Hopefully we can get this fixed soon
We have turned off a new feature that was causing this behavior, sorry for the inconvenience. Will be sure to include this in our testing when we turn this back on!