Edit: Found it. Had to drop down a level in the filters. Yep, right justified, my guess would be that this was intentional and they were certainly not like that before. In fact, in the December update of the Desktop, they are left justified. So my guess is that this change was rolled out in January's release.
Either I'm not seeing what you are seeing or not looking in the right place, etc.
Here is what I am seeing in Filters, they look left justified to me:
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I was wondering about this also. To be honest, I'd not even noticed there was a count out to the right before but wondered why numbers had suddenly appeared next to my filter options on the left. Now understand that this is the count value! I guess it makes sense because even very large numbers are likely to be shorter in characters than the text values that the user is filtering so you get to see both. With the left justification, majority of the time the text fills the space and you don't see the count!