I trimmed video but I still hear audio | glitchy effect

You may notice that even after trimming a word(s) you will hear them when you play back the video. OR small glitch effects seen around trimmed parts. 

This can be caused by several things such as browser, desktop, memory, video size, internet performance, but is primarily a browser issue we will resolve over time.

This does not impact your final output though.

Do not worry, as the final output (once you render and download your video) should not have this and will have trimmed the video as per your edits in the browser.

For faster and better experience you can also try this use highlights) to edit video instead.