occasionally my attacks stop responding.

Happened to me a moment ago for the first time. Was also using FP.

In River Crossing, fighting an archer who was standing near a tree. FP is bound to my left mouse button though. We moved around a clump of trees but FP refused to cast. I cast Ice Spear and FP started working again.

Probably not related but I've noticed sometimes the animations for spells don't always appear but I can see the spell hitting mobs. Have seen this with Ice Nova, FP, Ice Spear. Often occurs when there are multiple mobs attacking me (Usually when I rush into a cluster of 5 or 6 like the ones found in Ledge and hit them with Ice Nova).

I accidentally opened another thread for this, but might as well post my experiences here too.

I myself had the problem only with freezing pulse. It seems to happen only when I target an enemy directly with my mouse tip.

A party member had similar experiences with lightning arrow though.

I am not 100% sure on this, but it seemed to happen more when the game desync'ed and would jump to the right place and time a second later.

enemies around doors more specifically. Very easy for me to reproduce now in Pyramid and any map with tight rooms.

I can reproduce this. I have a witch who is currently using FP until she earns Arc. I am used to FP being iffy; if you try to fire through a doorway, for example, the animation would play but the mob would not be affected.

This is different, though. I fire my FP, or try to, but my char ends up making a pose, and no animation occurs. The spell is more than "whiffed"; it is never even started.

This tends to occur a lot in tight spaces. If the enemy is standing right outside a doorway (even if I am in the same room as the mob), this usually happens for me. If the enemy is near a corner this often happens, again, even if I should have been able to damage it under usual circumstances of considering FP's special behavior.

If I had to form suppositions for which I am totally unqualified, I would say this may relate to the new option for move-only. Just my unsolicited and most likely erroneous guess. <3

You guys still rock, GGG! *cookies!*

I does happen to me quite a lot, using freezing pulse on right click button. Thx for looking at the issue GGG :).

I have trouble with middle button with other skills. Maybe my mouse is dying, though.

Same problem, I've noticed I can't cast my freezing pulse at monsters who stand near objects or walls/doorways.
Happens constantly after last patch.
My freezing pulse is bind to right mouse button.

Was thinking about starting a thread about this problem a few days ago but couldn't find a way to properly word it, Ekalindorskii however, put it perfectly word for word in both of his posts.

Happens to me with many skills but also including curses, so killing doesn't seem to be the issue

I had this issue happen twice in a row in a <1 minute span, but I can't remember what I was doing at the time.