[BUG] Obsidian 1.9.12, latest WIN 10 update incompatible when underline is enabled

[zbabbb]

When insertion (underline) is enabled, I'm unable to type, do lists, it changes other text, types backwards, changes formatting....

I have tested, there is no conflict with other plugins or themes, it is solely this plugin with the latest Obsidian and latest Windows 10 update

[zbabbb]

I have tested again, it's other functionalities of the plugin as well, not just underline... Uninstalled the plugin, hoping for debug because it's very useful otherwise...