Maple introduced "Copy as LaTeX" a few versions ago and I have used this feature exensively when it suddenly stopped working.

After som experiments I found the root cause and easy (but irritating) workaround for OSX

Problem:

"Copy as LaTeX" suddenly stops working ("Copy as MathML" still works fine)

Cause:

This problem appears if in “Display Setting”-tab in settings dialogue the “Input display” is set to “Maple Notation”

In that case all attempts on “Copy as LaTeX” will be a null-function and not move anything at all into the copy buffer.

The “Copy as MathML” is not affected by this in the same way.

I have confirmed this on OSX in Maple versions 2022, 2023, and 2024

Workaround:

Adjusting “Display Setting”-tab in settings dialogue so that the “Input display” is set to “2-D Math” and “Apply Globally” makes it work again.

A bit annoying as a prefer the maple notation input and I cannot have this setting if I want the copy to latex to work.

Note:

in OSX this can also be fixed by removing the Maple preferences file and letting Maple restore it.

~/Library/Preferences/Maple/2023/Maple Preferences

Edit: Added 2024 as affected version.