Hi Nucleus, I ran into something similar yesterday where I was stuck in live preview and couldn’t get out. (I prefer the source editor.)
I was able to solve the problem by closing the app, renaming my .obsidian folder to another name, and then restarting the app. I don’t necessarily recommend this since you lose all your settings, but it was worth it for me.
I have solved it. Using the “Homepage” plugin, I had loaded a saved “Workspace” when the program started. This probably caused a conflict. After deactivating the plugin it works now.