XF 2.1 Content type filter issues when approval queue is empty

[Tom]

As per title, the content types don't show within the dropdown:

 

[Tom]

After looking further into this, the content types shown in the dropdown both appear to be left over from a removed XF1 addon, so it's likely not a bug with XF itself.

 

[Chris D]

That is very feasible.

It does likely mean that you have entries in your queue that you can no longer see.

If this is the case and you believe the queue should be empty, then you can probably get away with just emptying/truncating the xf_approval_queue table.