Office for Foreigners (Urząd ds. Cudzoziemców) on April 1, 2020 published information on introducing special solutions to foreigners as regards to the extention of their stay in Poland in connection to the coronavirus pandemic. The regulations will allow people who want to pursue their current purpose of stay or cannot leave Poland due to the spread of SARS-CoV-2 virus to stay legally in the country. The solutions came into force on March 31, 2020.
Details are available on the website of the Office for Foreigners https://udsc.gov.pl/en/coronavirus-outbreak-special-solutions-for-foreigners/