How do I Prevent Default Tab Key Behaviour in PM?

I am creating a custom tabular structure and I have created a command that moves the selection to a next node. The keymap for the feature works for “Control + q” and other non-Tab keymaps, but when I use Tab for the keymap, the selection changes to this image

I tried to use handleKeyPress/handleKeyDown, but it seems PM does not pickup the Tab event. So my question is, how do I selectively take control over what the Tab key does?

It does for me. If you can set up a minimal example and tell me which browser you’re using, I can take a look.