Somehow the width of the edit history does not fit onto my screen as it used to.
This does not happen at Welcome to meta.discourse.org. I have the impression it is related to the code blocks.
I first noticed the issue here.
But it also happens here. Note that the width is not the same as in the first example.
I repro the issue and it comes from the codeblocks indeed, maybe because of their max-width.
This will be fixed soon, I’ve just merged an update:
Thanks for reporting it @Moin!
Some more adjustments on the way