There are times when I'm not able to manually add data to the Apple Health app - I provide all of the information and click the "Add" button only to receive a greyed-out button, no new data, and an app that I have to force quit.
It also seems (as I've just confirmed with a reboot of my phone) that I was unable to see data that I'd entered previously at the top of the screen. After the reboot, I am able to enter data again.
Example video showing inability to add data (but also showing the absence of existing data): https://www.youtube.com/watch?v=IYHb-JCfElE&feature=youtu.be
Has anyone else seen this happening? Is there something I can do to fix this short of rebooting when it happens?
I noticed in one of my apps that uses Health for part of its data store that occasionally I could click the button, but the app would not actually record data. Then last night, I was trying to record some other data manually in Health, and I experienced the same issue.
iPhone 7, iOS 11.4 Beta (not sure which sub-version) - I've had this device since soon after the iPhone 7 was released.