To reproduce, paste the following text into the text field of http://divvun.no/korrektur/speller-demo.html:
«eastti rahpá julev»
and set the language to sme (but any language will do - the original report used Estonian, as tested on http://divvun.org/).
Notice how both the first and the third words get underlined, even though they are correct. If one inserts a space between the quote signs and the following/preceding word the underline disappears.
Other characters causing a red underline/misspelling flag are:
“ ” ’ ’
There could be even more. I am not sure exactly which component should be changed to fix this, so filed here for now. Certainly it is one of the ck-ospell parts.