Not sure if anyone else has had this experience but in a project with a lot of edits, I frequently get things go missing from earlier on in the timeline. So, for example, I'm making 15 minute videos maybe 5 or so minutes at a time, importing, editing, capturing, etc. By the time I get to the end, I go back to the beginning and find that there's a huge gap, or something's been deleted, and I need to drag out from another point in the video and re-edit all over again. I can't be sure but it seems to be related to when I'm zoomed out; if I try and move or select things while Camtasia is rebuilding thumbnails and waveforms, I find that things are getting randomly selected from elsewhere in the timeline. Is anyone else experiencing this?