I happens on Garmoth, and on Isabella.

Also this one-by-one display of looted items is annoying, it covers the view while the fight continues.

I was thinking hard and didnt come to a single reasonable explanation why this 'feature' should continue to exist.

I dont expect this to be fixed or removed, now I only want to understand what were they thinking, the thought process.

We need to press Esc key fast so we can actually see what happens around us, this is very distracting.

Like a cheap casino. Show some respect to players who pay your bills.

https://postimg.cc/yg9snq3f

https://postimg.cc/bSh8B6Qq

They implemented it to solve some other boss loot collection problem, and created other problems in the process.  They should just drop a bundle in BS Safe like Vell does.  That way you don't lose out from swapping alts before opening the chest, if you happen not to learn from the first time you do that.

The problem there, from a game publisher's perspective, is that the loot is 'hidden' and not making a statement of "look what we give you!' or whatever.  It would also bypass inventory space.  Which would be nice for Isabella with how those unstackable energy itemsdrop from every spawn.