I flagged this now-deleted Cross Validated question as Very Low Quality. When I looked at it an hour later, I noticed that the VLQ flagging option was gone (presumably because it was in a review queue at that moment), but I could add another flag (as off-topic, though it would probably work with spam flags as well, and this particular question might qualify as such since it's essentially a job offer).
This resulted in a rather strange situation where I had two pending flags on the question:
I'm marking this as a bug since under normal circumstances, the system prevents adding a flag while another one is still pending, whether this is via the site itself or the API.