What doc page explains : " For keeping a clean level bounds size and layout it is important to give attention in which sublevel you place your splines and objects as it may influence the extent of the level bounds. "
High concenration on the opposite of question title as I have no game issues, just the ODD summons world comp window drawing issues, which has gotten a bit worse- so the idea of having to worry where you place objects as relates to level bounds extent is very alien to me,nor do recall seeing docs on it- how would I have known to be cautious when simply placing tile objects ?:
Pic originally show above on topic creation has changed, maybe posting here will make more clear what is going on, as not in above, now I see large amts of BLUE, and a few tiles are much larger.