Invisible Mermaid diagrams code

[Mpic]

Hello !

I love this theme, but I noticed that it is the only one I know that does not show mermaid code blocks when diagrams are clicked :

It is supposed to look something like this (here with the Misty Light theme) :

If that can help, I saw that the Vue theme also does something funny with mermaid diagrams code :

[noatpad]

This one actually has me stumped. Because for some reason it kinda just loads like that, but if you interact with it some way, it displays normally (or somewhat normally, the code sometimes gets obscured behind the line numbers, which is another thing I haven't been able to figure out).

Entering and exiting Source Code Mode, changing themes, & inputting text puts it back to "normal". It definitely looks like the theme is causing it somehow, but I still can't figure out the culprit

[Traveler0014]

Noticed that there is another bug that may be related to this. If I try to create a new code block starting with

    ```mermaid

then I will see the cursor is just under the line number, the CodeMirror-code element is covered with CodeMirror-gutters.
to fix this display error, I just tap 10 times , till the line number from single-digit changes to '10', and the cursor will back to the right place.

[Traveler0014]

I just found if you comment out these code(Around the line 1126~1129 in ursine-polar.css):

.cm-s-inner {
  padding: .25rem;
  border: 1px solid #0000001a !important;
  border-radius: .25rem;
}

All the problems will go away.
Hope it's helpful.