Hello. I saw your reply to my review of Coollector Lite and I think this is how I should reply. In answer to your question, yes, I will try to help you fix this bug.

Steps to repro:
Click on single-pane mode. Dismiss the pop-up explaining single-pane mode.
Click on Barcode Search. Enter a barcode. Click on Search
Click on one of the Icons for the titles returned.
The error box is stuck under the movie title box that appears.
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The only thing I can do is move the movie title box out of the way, hit continue to dismiss the error pop-ups and then the app crashes. I then get the option to report to Apple which I did several times.
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Screen Shot 2019-07-07 at 4.09.24 PM.png [ 27.1 KiB | Viewed 8084 times ]
I am using a iMac 27", Late 2013, Mojave OS 10.14.5. I do not have a 2nd monitor. I do not see this problem if I stay in multi-pane view.
Thanks,
Richard