Stray lines after extrusion

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I'm bugged by something strange in Fusion 360, occasionally, when I made an extrusion in my model, there will have some strange strayed lines appears in the workspace:

As you can see from the screenshot above, the lines that are supposed to be the edge of the ring shaped object below, where I highlighted one of the edge, is shooting off to some unknown point. It's not a show stopper, I still can continue working, the strayed line won't affect any operations following, but the lines really obstruct me from doing precise works since they will get in the way, when it's really bad, there will be multiple of tens of strayed lines disturbing my sight.

I tried updating my graphic card driver, this doesn't solve the problem. I waited 1 update for Fusion 360, still didn't solve the problem.

The only way to make the lines go back to where they are supposed to be, is to save the file and quit Fusion 360, then open it again. With luck, I can have a 2~3 hours session without this happening again.

So, can anyone tell me is this a visual glitch in Fusion 360 (So that I'll wait patiently for an update that finally solve this problem), or is it an issue of my graphic card driver (Radeon Software 18.9.3) (So that I'll continue to update to the latest version), or my graphic card (RX 550) is problematic/not suitable for Fusion 360 (So that I'll try to get another graphic card - which I hope is not the case, I could never afford an nVidia card...)? I just recently swapped out my old graphic card (HD 7850) that had died. This has not been happening when the old card is still working.

My System Spec:

i7 4790 @ 3.6GHz

16 GB DDR3 RAM

RX 550 2GB

Windows 10 Home ver 1803

Thanks for any help.

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Might be some artifacts from an e.g. extrude cut. Scroll back the history line step  by step. If the lines are disappearing you've found the feature what is responsable for. But without the project it's hard to tell. Is it possible for you to File -> Export the design and attach it here?

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Hi, thanks for your reply.

I haven't tried scrolling back to previous actions in history, will try that to see if there is anything that could give me any clue of what is the culprit in this glitch. I doubt there is anything to do with what my project file content is, as this happened in two totally unrelated projects. Two different design, two different files. One thing I'm sure is this only happen after an extrusion was made.

The glitch effect is not saved in the file, when it happened, it will go away if I just save the file and quit Fusion 360, then launch Fusion 360 and open the file again.  It's like some of the parameters for rendering the edge line are somehow glitched and caused the lines to shoot off into some unknown point in the workspace. In some occasions, there are many lines shooting off to many arbitrary directions.

I've search around the internet and Fusion 360 forum, looks like I'm the only one having this problem? I'm concerned if it is my graphic card that's the source of this glitch, if so, I'd want to send the card back for replacement while it's still under warranty.

The graphic card is working fine outside of Fusion 360, like, when gaming.

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I just realized this question stayed unanswered here. I'll put a closure to it now.

The glitch has gone away in one of the past update, I assume, as now (18 February 2021) I have not seen this problem for quite some time now. Guess the development team solved (intentionally or not) this problem already. Thanks guys!

I'm still using the same hardware, graphics drive might have been updated twice or so, and Fusion 360 has been kept up to date.