Can’t name the file#506

I went into the files app and renamed a few files and then I opened SoundLab and looked in ICloud and all of the renamed files was renamed improperly a : instead of / so I tried to rename the file in SoundLab but I said it couldn’t rename it.
So afterwards I brought it into a new project and when I exported it, it said “failed to rename file” and the name was a bunch of numbers.

?

I can reproduce this issue, but why you use “/“ in file name?