Ps creates an extra Assets folder when Saving a file with a "+" or "-" as the last character in a layer name.

Ps v27.11 on macOS 15.8.1 - When saving a file that has a “+” or “-” character as the last character in a layer name it will create an “filename - assets” folder, usually empty, Occasionally there is a text file listing errors, one for each such layer name. Once saved subsequent flattened saves also get a similar extra folder created. Workaround is to remove the characters before saving. This didn’t happen in previous releases. Ps seems to be analyizing the folder names in some way rather than simply accepting them a plain text and producing an error when the assumed math equatioin is left “unfinished”.