I am using the GLKVM app on Windows. I assume the GLKVM app internally is also just a browser wrapper (embedding Chromium?), which is fine, but it should suppress the original behavior reacting to the "Back" thumb button on the mouse.
I constantly press that button out of habit while using the browser on a remote machine to go back to the previous page, but what happens instead is that the GLKVM app (or the browser in it) goes back to the login screen where I need to enter the admin password.
Expected behavior would be that the back key is instead forwarded to the remote system to be processed there, and not processed locally in the app.
As it currently is, it's also not a useful feature security wise, in case someone would want to use it to deliberately go to the login screen in the app: getting back in from there is as simple as pressing the other "Forward" mouse button, no need to enter the password again (which is also what I frequently do now when I accidentally used the "Back" key).
Of course this means that the "Forward" button should also be treated just the same and not processed locally.
I think this is a bit similar to this post, so maybe the GLKVM developers want to do a general assessment of all special keys or hotkeys and how to react to them.