I had the same issue in 5.5.4.
It looks like the crash isn’t present in 5.6 anymore, at least it works on my machine(Ubuntu 24.04).
The only workaround i found for 5.5 is to manually download the new toolchain for 5.6 found here:
Specifically v25, 5.5 used v23 i guess the root of the issue lays there.
After downloading move the extracted folder to
Engine/Extras/ThirdPartyNotUE/SDKs/HostLinux/Linux_x64
You also have to update the Linux_SDK.json to match the new version found here:
Engine/Config/Linux/Linux_SDK.json
After that i installed the toolchain via RunMe.sh found here:
Engine/Extras/ThirdPartyNotUE/SDKs/HostLinux/Linux_x64/v25_clang-18.1.0-rockylinux8/build/scripts
Lastly clean the build, delete /Intermediate and rebuild the engine from scratch.
I haven’t extensively tested this workaround but perforce works, and everything else i tried also seems to work fine.
I’m not 100% sure if i’ve provided every step of the workaround, took me some time to fix this.