Not entirely sure where to send a bug report to, but I thought this should at least be mentioned somewhere.
I've noticed on a couple different games now with the beta v1.82, that on a planet with the "fortress world" bonus I am still unable to place more than 150 mines. The in-game tooltip shows 150/200, but I get the message "too many mines in gravity well already" when I try to place more.
On a related note: I've also noticed the AI failing to utilize planetary bonuses like "fortress world" and "weapon test facility" (e.g. no additional starbases, or tac structures beyond the norm). I don't know if this is caused by:
-the AI hasn't explored the planet to access the bonus
-the AI isn't able to take advantage of the bonus (such as being limited to 150/200 mines, same as prior bug)
-the AI can't adapt to utilize such a bonus (AI behavior issue, my main concern in bringing this up)
-simple random chance, it can/will happen I just haven't experienced it yet.
Overall my compliments to the developers. I've played this game since vanilla, and it just seems to get better with every expansion and DLC addition.