DYLD_INSERT_LIBRARIES=asan gets stripped on macOS launch ?

I am having the most mysterious bug: I'm trying to insert the path to ASAN by editing the run environment of my executable, by setting it in the view :

DYLD_INSERT_LIBRARIES=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/15.0.0/lib/darwin/libclang_rt.asan_osx_dynamic.dylib 

Yet on launch (or even when I click the "Open a terminal" button in the run view to open a terminal with the environment), the env var is missing.

Now, for the perplexing part of it :

• This works:

DYLD_INSERT_LIBRARIES=(some random dylib in my $HOME)

• This works:

FOO=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/15.0.0/lib/darwin/libclang_rt.asan_osx_dynamic.dylib 

but the combination of the two gets removed ?

This seems to be deep : if I export said variable from a terminal, and launch QtC from this terminal (through "/Applications/Qt Creator.app/Contents/MacOS/Qt Creator") I don't see th env var show up in the default environment of the apps (build or run)