Ah, from what I can deduct looking at
https://boardgamearena.com/bug?id=12467 - the hold to see details of the card was something that players didn't know they can do? And that is why the tooltip question mark was implemented?
For me, and people that I know and play with, this change made it really frustrating to play on mobile. Just the tension that trying to see details of military card may play it ruins all the fun from the game. And when the missclick happens (and they do happen), well, it ruins not only fun but the game.
From the bug I see that some players do need the question mark to be able to see cards. So I believe we need one of the solutions:
A) keep both Question Mark and hold-to-see-details
B) switch that enables "help/safe mode" like Seasons have (
https://boardgamearena.com/gamepanel?game=seasons) - it's safe to explore cards without risking them being played
C) both of the above (again, like Seasons have)
What do you think?