Replace the fuses , sometimes they look okay but can be making bad connections .
I have replaced mine mostly with the all metal type not the color plastic ones, The metal ones hold up better.
I can say that I have had problems that I thought were bad bulb contacts with all of the various lighting, wiring , and problems with other windows not working intermittley and have found most of the time the copper clips that hold the fuses in place can be dirty causing the same type of problem. Hope this helps.

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A couple of Ford pickups F 150,250, 350 missed.
1983 240 D 256,000 miles ,auto, ac.