I've never shot a compound. And I've only shot a few longbows a few times.
62" recurve at that, I have no problem making any shot, just have to be conscious of the limbs and any clearance I may need for them.
I tend to shoot vertical.
I do practice canted shots, tho thats usually sitting down. Log, climbing stick, ladder stand or even from the knees.
I've found that over the bridge shots need extra emphasis on turning your hip away from the bridge. You really have to trust your gear, lean into it, and have good core tension to be stable and maintain form during those shots. If not it feels like my form just kinda collapses, and I can see how short draw would become a habit.
If I don't feel comfortable, I won't rush a shot. Thats standing, sitting, in a treestand or in the saddle. Knowing bad form and when to let down, regroup and draw again was a difficult concept to engrain in my shooting process, but I think it helped tremendously in all shooting scenarios.