Disputed recognitions.

Czechoslovakia recognised Palestine, and both successors said they would carry on international legal stuff from Czechoslovakia. However, the Czech government now says that Czechoslovakia never formally recognised Palestine. I don't know how meaningful that claim is or what it's based on. Slovakia independently reaffirmed the recognition shortly after the two split

Hungary's case is just that communist Hungary recognised Palestine and Orban's government is mad about it (though apparently not mad enough to formally retract the recognition)