Ctrl-backspace removes node instead of the word in the input

[ruXlab]

Platform
Linux(pop_os) / gnome, Opera

Description
Web app intercepts ctrl-bkspace and handles it as "delete node" instead of deleting word to the left of the cursor. It's a default behaviour across the system for any text input (I believe in Windows it works the same)

Related to #40

I expected to see this happen: the word to the left of cursor should be removed

Instead, this happened: the node got deleted

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(sidenode: thanks for open sourcing this project!)