I have tried custom scroll, but the drop down closes once i select the area of drop down.
The Image below was created by capturing the help menu of both SnagIt 11 and 12. I had the same problem as you and found this in the process.
Just wanted to stop in to let you know that we have just released a new version
of Snagit that has a new capture method called Panoramic Capture! It allows you to capture those pesky scrolling
more about what’s
new in this version.
Try out the new version of Snagit for 15 days – download it here.
If you own a license to any earlier version of Snagit on Windows or Mac, you can upgrade to the latest and greatest for only $24.95 USD – see upgrade details here.
Thanks again and be sure to reach out to our Technical Support team if you run into any more issues!