I think this is a very urgent matter, because for most work in market research this "feature"/"bug" will make randomization in array questions unusable, if randomization of subquestions will force a randomization in answer options.
Help us to help you!
Provide your LS version and where it is installed (own server, uni/employer, SaaS hosting, etc.).
Always provide a LSS file (not LSQ or LSG).
Note: I answer at this forum in my spare time, I'm not a LimeSurvey GmbH employee.