I’ve noticed that version 10.4.7 (5309) of the RD client fails to resume properly when you open the app following on from the iOS device being locked or when navigating between apps. To replicate...
TaniaMariscal
Microsoft
MicrosoftWe are sorry you are running into issues. To discuss issues we recommend to share your problem on our Tech Community forum (https://aka.ms/wvdtc) or open a support ticket after you have reviewed the troubleshooting options in our documentation (Windows Virtual Desktop troubleshooting overview - Azure | Microsoft Docs)
We recommend to review our troubleshooting section first. The other option you have is to open a support ticket through the Azure Portal.