Collectible Card Game Headquarters

Describe the Bug:

Hornet Queen's ETB effect of creating 4 insect tokens does not resolve when the opponent responds to the ETB activation by putting Sensei's Divining Top's "flip the top" onto the stack.

I've tee'd up the scenario for you in the attached savegame.

Which card behaved improperly?

Hornet Queen

Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
version 8-2020 a62926f - gauntlet

What exactly should be the correct behavior/interaction?

4 insect tokens get created.

Are any other cards possibly affected by this bug?

I speculate that other token-generating ETBs might get disrupted.

I confirm that activating 2nd ability of Sensei's Divining Top's "flip the top" both AI and human can counter any etb abilities, I tested 4 different cards with same result.
I wonder if it happens with other activated abilities.

It probably has something to do with real_put_on_top_of_deck(). I replicated the bug with the following (some needed a Leyline of Anticipation in play):
Mirror-Mad Phantasm
Credit Voucher
Rootrunner
Diminishing Returns
Vortex Elemental's first ability
Cromat (return to deck)
Temporal Spring
Vanishment
Roil Spout

But NOT:
Nulltread Gargantuan
Transmute Artifact

So this is fixed in f8561aa. It's really a byproduct of allowing responses to triggers and some functions not really being prepared for that. However, I was able to overcome that in this case, but it's really not that useful until this bug is fixed. Still an improvement, though.