Does firefox not allow screenshot import anymore?

First off I have always used Firefox as my default browser... better than all the rest. For the last week I've been working on a project on ChatGPT and have multiple times dragged and dropped a screenshot directly into the chat until today... now it gives me a red warning label at the top that says that this browser does not support import of jpeg, png, heic... but I've been doing it all week. Has there a change? How do I keep doing this? And now it won't even allow me to add an image here.