Poly finish on wood still tacky after a week



I'm having a strange issue with the table I started refinishing a couple weeks ago, where the first coat of oil based poly finish is still a bit soft and tacky on one specific area a week after I applied it. The problem area is the dark-ish section in the centre of the closeup image. I used oil based stain and poly. Here are the steps I've taken so far.

* Sanded to bare wood with 80 grit, then 120, then 220 * Applied Minwax Pre-stain wood conditioner, waited for 20-30 minutes * Wiped on Varathane oil-based stain and then wiped it off pretty much right after. Wiped with a dry cloth several more times for the next 48 hours. At that point it felt dry to the touch but there was a small hint of stain on the cloth. * Brushed on Varathane Professional satin finish * After a week, sanded most of the tabletop with 220 grit paper to clear the rough spots. The tacky spot was gumming up so I didn't persist with sanding that part.

It's only a portion of the top of the table that's having this issue. The rest of the top is ready for a second coat and the legs and underneath are done. I'm not sure exactly what kind of wood it is. The table is indoors in a room temperature environment, about 22-23C.

At this point I'm going to leave it until at least the weekend before I decide on next steps. Any suggestions or critiques of the steps I've taken so far?