Scheduled Posts not posting

I have been using wordpress for years and routinely schedule posts for later in the day or in the future without issue. Recently, the majority of the posts I put into the schedule end up “missed schedule” and never publish on time.

I am currently using WP 5.1.1 and I think when I updated to this version is when I began having the issues.

Is anyone else having this problem? Anyone have suggestions on how to fix it? Can WordPress mark this as a bug and fix it in the next update?