The European Games will shortly be held in Belarus. For this reason, a representative from the Ministry of Interior came to a parent-teacher conference in Minsk and advised parents to take special care of their teenagers during the event. Although he did not say it out loud, the meaning was the following: Perverted Europeans will arrive from Europe where LGBT, marijuana, and prostitution are legalised and paedophilia is thriving, so better keep your children away from the sodomy that the foreigners will organise in Minsk. Belarusians are keeping their kids away from the high numbers of perverted European tourists as if they had the plague.
Summary
The new Ukrainian President will not be as submissive towards the United States as President Poroshenko, so the US-Ukraine relations may deteriorate. This situation will cause the automatic worsening of the Polish-Ukrainian relations once Polish authorities realise the American policy towards Ukraine. Thus, relations between Poland and Ukraine will deteriorate not because of historical issues, but because of the complete dependency of Polish foreign policy on the United States.
Disproof
Recurring pro-Kremlin narrative that the United States is using EU countries to achieve its geopolitical goals and that the EU elites are controlled by America – see examples here and here.
The statement that the United States controls the European and Polish elites is a conspiracy theory. Poland is a sovereign state, which shapes its own foreign and domestic policies - moreover, being a member of NATO and the EU, Poland is able to impact the formation of common foreign policies of these unions. See other examples of disinformation about Polish-American relations here.