We all know that bugs are inevitably added by game devs when they release a new update, and not even AAA developers manage to QA everything enough to ensure a zero bug experience, and even a long beta period wont always show these bugs as people don't play beta in the same way as they do the live game. However, this post is not about those inevitable bugs that are added at the beginning of every update, nor is it about the massive number of bugs that are added; this post is about those bugs not being fixed (for a year or more) despite being known about. Also, remember that the Beyond series of updates was about fixing the little issues, not making more issues.
So, I will mention some of the known bugs that have been bugging me since way back in the 3.3 update and before, and you guys can feel free to mention any I have missed.

CZ's being exploitable and therefore rendering player versus player BGS broken (been broken since 3.3)

Invasion expansions not resulting in the loser retreating, which is ruining the dynamic nature of BGS (been broken since 3.3)

CZs either not having any ships in them, or they do have ships in them but it keeps moving away from you (been broken since 3.3)

Material traders either locking up, or you trade one material and the next material you attempt to trade glitch out and show a large number that needs clearing before you continue (been broken since they were added in 3.0)

The sky grid is broken and shows large "star cubes" in places instead of a natural looking continuation of stars (been broken ever since I remember, and has never been addressed)
This list is not really bugs, but still issues that bug me

the contents of the contacts panel moving around like a catfish on a pole which results in it's own frustrating mini game when trying to select items to place them on the ignore list (this may be intended, but it is far from great gameplay)

AX weapons being so unbalanced that there is only really one load-out for every CMDR; gauss cannons and flak

PvE piracy being rendered completely useless due to the target high boosting away and high waking as soon as interaction begins

PvP piracy being completely useless due to targets combat logging with no consequences as soon as interaction begins

Can sort ship storage list buy various columns, however we can not sort our module storage list
Well that is a few of the issues that bug me, which long standing issues bug you?