[Raapys]

Bug: I have a resupply alliance with another race and when trying to resupply at one of their planets, my ships stop on an adjecnt hex and refuse to go into the planet hex.

You don't need to go onto the enemy planet hex to get supplies: being in the system is enough. However, note that a single resupply depot only distributes 500 supply points *total* throughout the system, and those points are given depending on the supply priorities. Your ship might very well be far down on the ladder.

Bug: Far too often I am allied in the defenders column with a race I'm at war with and neither tactical or strategic combat will let my ships fire at the enemy.

Note that, while it's probably a bug that they're in the same column, the same happens all the time to me but never prevents me from shooting at the enemy. In other words, I suspect you're experiencing another problem. Could be a seperate bug, lack of supplies/ordanance, etc.

Perhaps you could post a savegame with this problem?

Sometimes units in fleets are not resupplied moving into a planet unless 1st detached from fleet when moving in.

Again note that you don't need to enter a planet's hex to get supplies, and that one supply facility only distributes 500 total points each turn, divided after how your resupply priorities( set in Empire Options) are set up.