But this comic here, shuts down my Comicbase app every time I scan the barcode with my phone.

if you hand type in the full barcode number OR search by title and issue number you get the same result?

Programming team is investigating the issue; they have been tooling with the backend programming for the app in the past week or so. As a result, barcode searching is bit buggy than normal. Hoping to get things resolved soon.

Search by Title and Issue # works okay. I haven't tried the barcode.