It looks like it's the only issue, however there are a lot of environment variables set for other platforms. Firefox can't know which extension/plugin is loaded, so any difference between the build environment of the extension/plugin and the runtime environment of the extension/plugin may cause issues.
> As for LD_LIBRARY_PATH, is NSS the only issue
It looks like it's the only issue, however there are a lot of environment variables set for other platforms. Firefox can't know which extension/plugin is loaded, so any difference between the build environment of the extension/plugin and the runtime environment of the extension/plugin may cause issues.