Fifth Gear search returning incorrect results

Sonarr version (exact version): 3.0.3.644
Mono version (if Sonarr is not running on Windows):5.20.1.34
OS: Linux (Ubuntu 19.04)
Debug logs:
Description of issue:

For the series Fifth Gear (https://www.thetvdb.com/series/fifth-gear), when I start a manual search for S28E01 it returns matches for S27E01 instead.

Here’s the relevant output in the log:
19-10-4 02:50:54.6|Info|NzbSearchService|Searching 4 indexers for [Fifth Gear : S27E01]
19-10-4 02:51:02.0|Info|DownloadDecisionMaker|Processing 7 releases
19-10-4 02:56:53.4|Info|NzbSearchService|Searching 4 indexers for [Fifth Gear : S27E01]
19-10-4 02:56:59.6|Info|DownloadDecisionMaker|Processing 7 releases

So this doesn’t appear to be a problem with thetvdb since Sonarr is asking for S27E01 instead of what I clicked on. I have confirmed that whatever season/episode I initiate a manual search for, it’s always 1 season off.

http://thexem.de/xem/show/2788 (the episodes are remapped).

Thanks you. I wasn’t aware of this feature of sonarr.