Related Posts show excerpt after update

Dears, after update related posts show in some posts excerpts in the related posts. In others posts no show the excerpts, maybe is the cache.

This is new for me, in the customize I no have the option for hide excerpts.
If I put the date on, for example, the excerpt disappear, this is the hack I use for solve the problem.

Check if this is one error, if are one function for hide excerpts, if the last update have this error.

Also I think are one error of connection, I disable, delete and installed again and maybe that was fix.