Can we make the sidebar arrow in theme-simple point right if it has multiple sidebar .md files

[SumithChandran]

Is it possible to make the sidebar arrow in theme-simple link to point right if it has multiple sidebar .md files. The arrow is pointing down during my testing.

Here are the files I used for testing.
test.zip

When ever I load the page, the arrow is pointing downward (file1).

I want this arrow to point right like this:

when I load the page for the 1st time.

[jhildenbiddle]

This issue has been addressed and the fix will be available int he next public release. Note, however, that the fix does not support legacy browsers as it leverages the :has() CSS psuedo-selector.