I installed the batteries widget so I could monitor the charge of my iPhone 7's battery case, my iPhone, and Apple Watch. I'm noticing however that although the headings show after looking at any widgets on the today view of notification center, if you dismiss it, and then go back to the today view again by bringing the notification center back and swiping to see them, the widget headings show, but no information shows on the widgets. The only way I've fount to get them back is by hitting edit, and then done. It shows only once though, and the cycle repeats.
Is this a known bug, and is there any way I can prevent this from happening?