This has happened to me when salvaging a chest and also when salvaging an item. I click salvage and nothing happens within 30 seconds so I assume the game has soft locked. In the past it was no problem. I’d force close the game, reload it and continue. Since 1.5.5 (possibly since 1.5) when I do force close the game I am greeted with this upon reopening the game.
The same thing happens every time I start the game for 30 minutes until the battle times out. I tap the screen and it just shows victory. If I leave it on the screen for victory for minutes nothing happens (I trimmed this video). After 30 minutes - restarting the game it loads to the main screen.