Very different reactions to a different manufacturer of generic bupropion?

Hi everyone. I've been taking zoloft for about ten months and a couple months ago my doctor had me add Wellbutrin bc of brain fog and tiredness. I noticed an improvement quickly, and for weeks I was more productive and improving friendships old and new. But last week I got my pills and noticed they looked different. Different manufacturer, whatever. But after a day I started to feel more like I did when I had rough side effects at the beginning of Zoloft. Anxiety, waking in the night, intense irritability, very down mood. It seemed crazy but I told my pharmacist and he ordered the original pills I was taking but I'm still waiting. In this process I also ended up going two days without taking it (delay w my pharmacist idk). My question is, has this happened to anyone? Sensitivity to manufacturer, I mean?