PO stored in l10n repository not up-to-date against latest POT
The diff view of D-L used to show comparison of PO files of the same POT version, easing the view of what changes the translator did. Currently it seems the PO file stored in D-L instance is not updated against latest POT, causing the diff show things like line number changes, changes in strings previously translated and other changes that doesn't really represent exactly what the translator just changed in the PO file.
e.g. pt_BR translation for seahorse: I sent a file with POT creation date
2018-08-27 07:53+0000, the PO file in D-L has
2018-08-24 09:36+0000 and the PO file in seahorse repository is