During a Draft, I click and hold a card with the left mouse button to select it using drag-and-drop.

While I am still holding the card, without releasing the mouse button, the pick timer reaches zero.

The current pick is completed correctly. The game automatically processes the selection when the timer expires.

However, the problem occurs on the NEXT pick. The client appears to retain an invalid drag-and-drop state from the previous pick.

When the next pick begins, the game displays a misleading network connection error and prevents me from selecting any card.

The client remains in this broken state, making subsequent picks impossible until I completely close and restart MTG Arena.

The key point is that the pick during which the timer expires is NOT the one affected. The bug manifests on the following pick, apparently because the previous drag-and-drop operation was not properly terminated when the timer expired.

This strongly suggests an issue with the client's handling of drag-and-drop state transitions when a timed pick expires, rather than an actual network connectivity problem.