Hello,
I found a rather strange and weird issue I'm not sure what's going on. I hope someone else can help me or even provide a solution. I think this issue stared with the upgrade to v13.
So the issue is with forwarding special key combination via TW session to a RDP session on that computer.
The scenario is:
A friend asked me to take a look at his server (Windows), but it's not accessible freely, access only bound to his IP address.. so I connected to him via TW (I'm on Win 10, TW v13, he's on Win 10 v13, updated to the latest version) so far so good, everything works great, we can copy, move, transfer text and files...
... then I asked him to open a remote desktop connection via RDP (mstsc.exe) to the server so we can check.. and now here we are getting into the strange part... I can for example copy/paste text on his PC, but on the RDPed server in Notepad for example instead of copying text I've get typed letter c... if I want to undo with CTRL + Z, the letter z is typed. Same thing happens if I want to copy a folder CTRL+C and then paste CTRL+P, it jumps to a folder starting with the letter c and later to folder staring with p.. so the key combination CTRL + C/P is not working correct.. Also the same thing happens if I want to type a capital letter like Shift + A, its written a instead of A.
I have tried this on different RDP sessions and it's always the same, looks like the special keys combos are not getting forwarded through RDP session.. I haven't had this issue on TW 12 or previous versions as I can remember 
Hope someone can test this and see if it's also happening to him or is there maybe something wrong with my installation of TW.
I haven't figured it out what is causing the problem but I hope some will know 
Cheers for your time!
T.