"Load Core File" does not work with symbol file

Using Debug > Load Core File specifying a symbol file instead of the executable with debug symbols is not working.

The symbol file seems fine since it is working if imported manually within gdb using symbol-file /path/to/program.debug and it was generated with

objcopy --only-keep-debug program program.debug

Looking at the source code it seems that the file is loaded unconditionally with -file-exec-and-symbols instead of -file-symbol-file.