2017 iMac, 4.2 GHz quad core I7, 40 GB RAM, MacOS 12.1
Roon v1.8 build 884
Ethernet from Core to NAD T 778 AVR with 2 Netgear GS108 switches
NAD T 778 AVR via Ethernet
When using Roon Remote on the iPad mini 4 (iOS 15.2 and using WiFi, Remote v 1.8 build 880) playing tracks with Album Cover view switch to another app for more than a few seconds and then switch back to Remote, the lower middle Timeline and Controls disappear. Click the upper left X to close that view and then select the Album View (lower left corner) and all is well again.