Variable explorer not ordering index / background color grayed-out

[Rational-IM]

I noticed the following issues a couple of days ago:

1. Variable explorer doesn't sort the index if sorting done in any of its columns; there is also a miss-formating after sorting
2. The "background color" check-box is grayed-out

For issue #1, look at the DataFrame below (pre-sorting):

Now look at it when sorting by the last column (9/2/20) - see that the index column remained the same and there is some strange formatting happening (making it hard to navigate to the last column, sorting again etc):

Regarding issue #2, you can see on both pictures above that the "background color" button is grayed-out (so the whole DataFrame was a black background).

I've been using Spyder for a while now, so I'm not sure I missed something obvious from the latest updates. It doesn't appear to be an issue of an extremely large/complex DataFrame. Size here:

[rhkarls]

I have the same sorting issue on 4.1.5, testing on a simple dataframe:

df = pd.DataFrame(index=[1,2,3], data={'col1':[1,2,3],'col2':[10,20,30],'col3':[100,200,300]})

The sorting works for the columns, even sorting on index, but the index column does not update visually.
I don't see any formatting issue, but perhaps due to the simple format of the data and keys.

[ccordoba12]

@Rational-IM, thanks for reporting. This is a duplicate of issue #13544 and we'll try to fix it in a future release.

[Ceballosk]

It is fixed? I have the same problem with the baggrund for Python 3.9