With a recent upgrade to Chrome Version 120.0.6099.71 I was experiencing an annoying glitch. If I held down a button and tried to move a curve then all curves on the page would disappear. My curves are being plotted with scattergl and sgm. There are many curves and much data…
When I tried same page on Edge, the curves worked fine. I was almost resigned to uninstalling and reinstalling Chrome but instead first I went to C:\Users<me>\AppData\Local\Google\Chrome\User Data\Default and deleted every directory with the phrase “cache” in its name. There were a lot of javascript files, and other stuff.
And amazingly, that did the trick. Thought I would share in case anyone else stumbles into same problem.
[Edit:: not solved, issue has come back 
]