I upgraded the extension on the main wiki to 1.4.1 as well and it works fine on the subwiki as well, so it may be fixed. However, I would like an analysis of whether the error from my console can be fixed by the fix from SCRIPTDOC-21 and whether it makes any sense that there is an interference between the scripting documentation extension version on the main wiki and the one from the subwiki.
if we can confirm these 2, I agree to close this issue.