Issue with using other-sourced 1602 LCD displays

[http-mint]

I previously found this extension super useful for making custom characters through I2C with microbit. It even allows you to make programs with their blocks! However, when using different kinds of sources, it can often make an extra "offset" space in the beginning. It uses identical boards for character libraries and of course, uses the same addresses, but it happens on all of my LCD displays.

Not sure if this is an error, or could be a code itself, but I would appreciate a code suggestion or the extensions itself to get it fixed. I am not so sure what to look for when troubleshooting this, so if you want specific specs, please let me know and I will try my best to showcase it.

Also, I am new to GitHub. Hello world!
-Mint