The issue is still open on the AHQ so many still have the bug. I've not had any problems with the few I've had in my last saves. They can be built and upgraded without issues.
For me the bug was always hit or miss. It didn't effect "all rockets" in my game. But it has effected me. Personally, I'm leaving in the mod fix from Simvasion until it's listed in patch notes as fixed.
Comments
Gallery: Kathykins
AHQ - Game help and Bugs
https://forums.thesims.com/en_US/discussion/997947/cas-qol-improvements
The Winters family Tree --- My Mods