When you have an RDP session open and loose connectivity to it RDM isn't usable anymore, you can't click any other session anymore until the RDP connection is restored or closed, which can take up to a minute:

As this can be quite a common thing (for instance, ending a VPN connection or switching networks from wifi to mobile) I consider this a bug, so can you look into it?
In general is RDM not very resiliant to connection losses, starting from the connection to the data source, which, if lost RDM suddenly fills passwords with the encrypted data fields or to ssh connections not closing when losing connection to said problems with RDP connections. Mayby you could survey the app in this regard and change things a bit?
Hello Perler,
Thank you for getting in touch with us. To better assist you, could you kindly provide us with the following information:
Did the problem start to occur after an update?
Your current RDM version.
The data source you are utilizing.
Screenshot of the configuration of your RDP entry under "Display" and "Advanced"
Any additional information or screenshots you believe might be relevant.
Once we have this information, we will be better equipped to diagnose and resolve the issue.
Best regards,
Maxim Robert