No _ underscore key exists on any vr overlay keyboard

[Vinyarion]

For some reason, there is no way to type the _ underscore character in any of the overlay keyboards. Oddly enough, there are *several* other characters with multiple keys on the dedicated non-alphanumeric characters keyboard:

• / forward slash
  
• \ backslash
  
• ( left parentheses
  
• ) right parentheses
  
• { left brace
  
• } right brace
  
• | pipe
  
• ~ tilde

As a programmer who often debugs things in vr, this has become a severely annoying problem. While several third-party applications (such as Desktop+) add keys (like Delete, Home, arrow keys), the base keyboard remains unchanged.

This seems like a simple oversight that just never got noticed, but the frustration from having to use a physical keyboard or copy-paste a preexisting underscore character is unnecessary. One would think that all printable ASCII characters would be on the overlay keyboard, but apparently not.