[Reg 4.7->4.8] Cannot set breakpoint for project while debugging other project

E.g. open projects A and B, start debugging for project A, open a file from project B and try to set a breakpoint.

Expected: A breakpoint is set in the file from project B
Actual: The breakpoint is added to the list of breakpoints for the running debugger for project A, and is not visible in the editor for the file from project B