Svmuu reported that Josh, Vice President of DeFi Engineering at prediction market Polymarket, posted on platform X, stating that the perpetual contract testing on the platform has been opened. Users applying to participate in the testing are required to provide feedback on UI aspects that are unsatisfactory or could be improved. Previously, users who applied via private messages were granted testing access, but currently, no new testers will be added. Some spots may still be opened in the future.