There seems to be some corruption in the document. You can clear it regarding the Kaf (כ) by creating one in the document body via 05DB, Alt-x, then copying/cutting it to the clipboard (which you could also do with the כ in this post) and using Find/Replace with:
כ
pasted into the Find panel, and
^c
typed into the Replace panel and specifying the required replacement font attributes.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]

unfortunately in this case Word don't pay attention in the Replace panel specified attributes but if I specify the attributes in the Find panel all works nice, so thanks the help!