Overwide "CTRL + W" closing window.
"CTRL + W" has always closed the application because it is a web application. However some term apps (Nano for example) uses this for search and in termius it has always being unusable because it was a chrome app.
However now it is a desktop application surly the "CTRL + W" can be override and sent thought SSH correctly.
Use "CTRL + W" is not a good idea. You can't let all VIM users change default hotkey "CTRL + W", because VIM users must use 'CTRL + W + [H/J/K/L/]', and I must change "CTRL + L" too.
"CTRL + W" is a global application hotkey that closes the current connection. You can change or disable global hotkeys on the Preferences -> Shortcuts screen.
I edit files by VIM, When I want input 'Ctrl + W + L' skip to left spilt screen, My ssh connect close!