Tabs in the stucture tab randomly close and can be literally impossible to interact with if they contain too much information (which in turn causes massive fps lag and the bug to occur).
For example, ships with a large amount of docked entities, which is easy to achieve with rails or a carrier, will have their "rail collective" tab in the structure tab containing a gigantic amount of entries. When a player attempts to open it, the game can freeze for a few moments and more likely than not the fab will either auto-close when the game unfreezes or not be open at all (especially on servers).
The problem with that is that the buttons to activate/deactivate/reset turrets is located in that tab. So more often than not it's a MASSIVE struggle to activate turrets on larger ships.
**SUGGESTED CHANGE:**
Move the buttons to activate/deactivate/reset turrets and docked ship AI to a seperate tab, containing only the buttons and not the massive docked entity list (since that's the source of the problem).
How to recreate:
1) Get a large ship with lots of docked entities/turrets (such as @lancake 's Eion)
2) Attempt to activate turrets in the structure tab
3) Notice how 99% of the time it won't stay open long enough for you to do anything.
4) Repeat until it works.
5) Throw computer out the window.