This is a very minor issue, but since I experience it hundreds of times every day, it would be great to fix. The issue occurs when you want to extend the last frame of a clip using alt-drag (Windows 10). When I hover my mouse over the right edge of the clip, I get the double arrow cursor. At that point, I should be able to press alt on my keyboard and get the extend cursor. Instead, it changes back to a pointer. In order to get the extend cursor, with the alt key still pressed, I need to move my mouse one pixel to the right and then back again to the edge of the clip. Then I can click and drag the clip to extend the frame. Most of my day is spent syncing slide show graphics with voiceover tracks, so I constantly use this feature.