Sticky and glossy paint touch up
Only a guess but maybe you had some of the adhesive still on the wall and painted over it causing the sticky feel. If so, you may need to sand it very carefully just over the touched up spot and surrounding 1/4 inch to ensure the area is smooth. Dust off with a dry soft cloth or dusting brush and try touching it up again just over the sanded area. I would use 180grit or 240 grit where oil based paint is concerned. You may even try wet and dry paper with a little water to lubricate the sanding.

Touch ups are hard to get right but don't worry, you do need to make it ugly before it becomes beautiful and sometimes when you try to touch up a postage stamp sized area and the whole wall is only 30 square feet, believe it or not, it can be easier to just bite the bullet and paint the whole wall.