This is a bug with chromium i think, but it particularly impacts brave. I can replicate on google chrome, but brave is the one that crashes.
WARNING! TRY THIS ON GOOGLE CHROME FIRST BECAUSE IT MAY BREAK BRAVE!!
When you click “manage profiles” for chrome profiles, and you have more than one. Try clicking and dragging the profile picture of one profile into the “profile name” text input on another. You will see a little hover notice come up, which usually is for dragging and dropping image data. Once you accept, the base64 image data of the profile will be injected as the profile name. Now, whenever i try to switch profiles, brave stops responding for a while. I can no longer change brave profiles.
I swear i was literally just switching over to brave for the first time today, and i accidentally did this trying to change the order profiles appear on the menu, and this bug happened. Now i cant use brave at all because i require the different profiles for my workflow. Please fix!
EDIT: okay i found a workaround. Just close brave completely and when you re-open, it will bring up the profile menu, you can then delete the base64 data from the menu there and replace it with a normal sized string.
Note:
-this bug only causes a crash/not responding issue when accessing the profiles by clicking the profile icon at the top-right of a current browser session, not when using the profile manager that displays on browser launch.
I still think this issue is important because i am a web dev so i was inclined to poke around and try a few things, a normal person may not and would just accept the browser is broken and stop using brave.