Just also wanted to add that I tried this with test.java (java-mode) and
reproduced the issue as well (whereas no issue when using test.py), so it
definitely seems CcMode related.

Also, I reproduced with "xterm-16color" and all the other
"xterm-[0-9]+color" terminal types, but no other terminal types I tried
reproduced the problem, including regular "xterm-color".

Best,
Jayden