aspell causing problems to weechat

From time to time I see in my WeeChat window some messed up error:

EOF while looking for matching '

Now I already figured out that aspell is causing it, and I can disable it, but I need it for spell checking. I thought maybe the spellchecker triggering it in aspell somehow, but that wasn’t it. Google not helping me either. I can’t reproduce this because it happens out of the blue, like apsell is checking buffer spelling or something. I don’t know. I will keep publishing updates on this when ever I find it annoying enough to fix.