@FoamyGuy I will test this afternoon.

@FoamyGuy I did my tests, I create a test code, that hopefully will help us in the future, maybe we can add it to the library repo somehow.
Thanks, for the fix works for the background very well, as I was trying to see other problems. I did different tests just to be sure.
I found the following problems:
We have some error is the setter of anchor point, I tested with the old code too and at some point we introduce this. I put a try, except in the testing code to catch this.
When using bitmap_label, and setting the anchor_position, and position the logic is doing something not as expected. you can see it in the test.
Not sure if the problem when these problems where introduced. I can take a look, after. As I did not use this library in the past, I am not sure how people were setting-up the anchor point

There is a time hard coded in the test. I recommend to use a time between 3 and 5.
Test_code is in https://github.com/jposada202020/sandbox_display_text/blob/master/testing_issue_background.py
I used this font. It is just the same font that we use but smaller and is in here. https://github.com/jposada202020/sandbox_display_text/blob/master/LibreBodoniv2002-Bold-10.bdf

Thanks for testing this out @jposada202020 and confirming the background fix. I'm going to go ahead and merge this one and make a new issue and new PR fix for the anchored_position when it's ready