Yep, that was my point. The cause was leapseconds: https://www.ainonline.com/aviation-news/business-aviation/2019-06-11/pilots-oems-dealing-collins-gps-issue h

Yep, that was my point. The cause was leapseconds: https://www.ainonline.com/aviation-news/business-aviation/2019-06-11/pilots-oems-dealing-collins-gps-issue https://www.ainonline.com/aviation-news/business-aviation/20... (I'm aware of many others, though I'm not totally sure which might be subject to NDA so I'd prefer to use examples from the press)