It is probably related to the overall building stability issue that has been reported elsewhere - if the build included any of the wedge shaped inverted roof tile pieces, then I would say the probability of it being related to this bug goes up to nearly 100%.
When they added this latest patch, they addressed the building losing stability part so that the build doesn’t fall, but I have the same issue that workstations placed in areas where the building would have previously become unstable and fallen are now causing the stations to go instable and be destroyed as if the building pieces below them had still disappeared. All the alchemy section of my current build is affected the same way and I can’t place any workstations there until they fix the underlying building instability bug.