Ever since I've upgraded my Mac OS to Mojave, CS5 has been crashing on and off. Basically it opens fine, but if I try to do anything it crashes immediately.
I've already allowed Photoshop access:
The other problem is that there's that weird texture on the dropdown menus
Is there anything I can do to remedy this?
Not likely to get it working. Nobody has been able to thus far. It's a really old piece of software and not tailored to the new way Mojave works.
I think you're going to continue to run into issues because PsCS5 is so old. The newer operating systems are not going to support it in the future.
I'd check out the article that Dean suggested. There's some good info in there.