Whatever tool is used to create the compiler options checklist seems to fail when it encounters a mingw-w64 GCC compiler version that it does not "know", i.e.:
When the selected compiler is reverted to a compiler that the tool "knows" it does not go back to the checklist and stays with the blank tab.
As requested last year when you posted what looks like the same issue can you post instructions on how to re-create this and include the OS and CB version you are using.
My apologies for failing to follow up on my report from last year.
OS: Windows 11, currently update 25H2;
CB: various, currently 13761;
Steps:
1) Compile latest mingw-w64 using MSYS2 and
https://github.com/niXman/mingw-builds, in this case based on GCC 15.2;
2) Copy mingw-w64 to location where I keep all of my compilers (based on GCC 10.5, 11.5, 12.5, 13.4, 14.3 & 15.2);
3) Set up the new compiler version option in CB settings (by copying and renaming an existing one as they are adjacent in the list, remembering to set the toolchain executables path);
4) Select new compiler version as a build target in a project;
5) Compile using new compiler version;
6) Close project at end of session;
7) Open project;
8] Observe missing list & checkboxes in compiler flags tab of project build options for all compilers, not just the latest compiler version.