Testers keep assigning bugs to me that have nothing to do with me. Getting annoyed?

So I guess while testing my work, they would come across a bug that has nothing to do with me or the work has not been assigned discussed yet. We work in an agile team and things move in layers sometimes where one sprint we build up the background work and the next sprint we do all the pretty stuff.

We have 1 testers and no one seems to get many bugs raised except me, where it seems like 80% of the time it’s something very unrelated to my story, and it’s something that hasn’t even been developed by me, so I’m not 100% sure the reason why it is what it is. Thing is he always just brings it up during the daily stand ups and says “/my name/has a bug assigned blah blah and that’s the first I know about it. I realize this is very minuscule, but it’a been happening constantly. I feel like the managers think I am a terrible developer because of this even though most of the time they’re non issues or it is something that will be worked on the next sprint. They haven’t said anything but they

I’m early career, this is my second developer job, however I have never had this many bugs raised. Is this common? What’s the best way to go about it without getting the tester mad? (It seems like at this job our 1 tester is more important than all of us devs).