That is a real problem, and an annoying one too.

I had a smaller problem in which replies from three months ago where missing.
timcliff advised me to look here
When I checked they where there and now they have returned to steemit.com too.
But that doesn't solve your problem. Maybe you could ask timcliff directly, maybe he can help somehow.

I have strange things going on, with voting as well.

Is the painting yours? I really like it.