build mode bug

im on pc

no gameplay/script mods but i use cas cc and a  bit of build cc

all this occurs at once - only able to place one item, after that items will not place, unless i re-enter build mode in which case i can only place one item again, no ability to undo, cant assign units (small business) or can only assign one room at a time before having to leave and re-enter build mode these are all occurring when entering build mode from both live mode and manage worlds
- something i believe is related is not being able to drag items, i can drag them but no matter where i place them they go back to where they were, unless placed in a fridge, trash can, sink, ect.

if theres already a thread about this issue, please could u redirect me as i cannot seem to find one