This is normal for me. Takes UO a while to stabilize after opening. Sometimes it just grays out instead. Most times it’s running normally within a minute, sometimes much longer. Activating the game is always an adventure.
Read your post a little more carefully. Have not noticed this when displaying my paperdoll. Usually mine is always on screen so I can see which Spellbook I am holding as I change them quite often in Tokuno.
My reading/understanding of UserActionUseItem is that this is double left-click, whereas HandleSingleLeftClkTarget is single left-click.
So, from my reading, the EC is literally taking possession of your mouse cursor (or the mouse thread) for a split second to actually perform a double left-click on your character, before freeing and returning the mouse to its previous position. Since your mouse is not out in front of you for a moment, movement stops for that moment.
I guess technically this would not be a bug, since the code is executing as intended. However, it's certainly a poor way to have the UI work.
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Read your post a little more carefully. Have not noticed this when displaying my paperdoll. Usually mine is always on screen so I can see which Spellbook I am holding as I change them quite often in Tokuno.
So, from my reading, the EC is literally taking possession of your mouse cursor (or the mouse thread) for a split second to actually perform a double left-click on your character, before freeing and returning the mouse to its previous position. Since your mouse is not out in front of you for a moment, movement stops for that moment.
I guess technically this would not be a bug, since the code is executing as intended. However, it's certainly a poor way to have the UI work.