I normally choose not to have any of the guild items displayed or enabled for tooltips. I noticed after updating today that the guild bank counts are appearing in item tooltips even with "Display guild bank items" disabled in the Config menu.

I'll take a look and see what's going on. It may have been something I overlooked when I did the complete rewrite of BagSync.

This issue has been fixed in the above commit (c8428ed). It will be available in next major version push of BagSync.