sbato
Version is 2.7.1.5
Widgets are: whatsapp, gmail, google calendar, google keep

Hi there!
I use the same version of the launcher too, but no issues here. Do try to clear cache and data of the launcher app. You may have to setup the widgets once again, but see if it helps. If issue persists, do send a bug report via the feedback app and also via PlayStore.
Cheers! :-)