For at least two months now I've had a problem with two-finger scrolling with the touchpad. Only in Chromium Edge as well. When scrolling with the touchpad, my cursor disappears, the page scrolls slightly, and the right-click context menu appears. I've reported this issue, I've also tried the many solutions posted including rolling back drivers or even uninstalling them. The problem persists.
@TheMartyParty Same here on HP Envy & Edge Dev version 79.0.279.0. To add to your report, within the PDF handler, it shows context menu but also zooms out to the minimal amount, page looks like a tiny stamp. My current touchpad driver is Synaptics SMBus ClickPad version 126.96.36.199 dated from the 29th of July 2019. This is a quite blocking pain, hope it gets fixed soon. The issue has also been reported here, but no MS action for now.. https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/21580132/