Sometimes the cursor size gets out of sync with the current scale of a Microsoft Remote Desktop virtual screen on the macOS app Version 10.7.6 (1972). So the cursor might be gigantic or really tiny...
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.