LO Writer 5 loses recent documents list

Since I upgraded to LO 5.0.1, I've noticed that the Writer seems to
lose the recent documents list at random.

This morning I edited a document and it had all the ones I've worked
on recently in the list. An hour later, it had only three, none of
which were the one I'd worked on and most of the ones I have worked on
were gone.

What's up with that?

Thanks.
MR