Video box ghost

The Video Box in v1.13.2 is remaining visible after being disabled or when there is no video to d/l. Desktop icons under the Video Box are active as if it isn't there, so I have to be careful where I click! The controls in the Video Box don't work and none of the controls in Ant DL affect it. The only way to get rid of the ghost is to reboot the computer which is a big nuisance. This is a recurring problem from earlier versions, but it was not an issue in the previous version. I'm using Windows 8.1 x64 16GB.

Is there a sure way (sequencing) to repeat the problem?

Go to website of interest, start a video, Video Box appears, click download, select the wanted resolution, d/l starts, d/l finishes, file is written, close browser, Video Box ghost does not disappear, buttons don't work, try turning off video box in Ant DM and in Ant browser app but they don't work. Have to re-boot PC. I'm using Firefox 66.0.3 x64. Does Ant DM write a log I could send you?

I tried but I could not reproduce - after downloading file and firefox closing video box was hidden automatically.
Does AntDM write a log I could send you? - No
Email me to support email I would want to do a debug build for logging for you.