UltiMaker uses functional, analytical and tracking cookies. Tracking cookies enhance your experience on our website and may also collect your personal data outside of Ultimaker websites. If you agree with the use of tracking cookies, click “I agree, continue browsing”. You can withdraw your consent at any time. If you do not consent with the use of tracking cookies, click “Refuse”. You can find more information about cookies on our Privacy and Cookie Policy page.
I have something similar.
The right hand one was printed a few minutes after the left hand one, with the same settings in the same ambient circumstances. the only difference is the inner diameter of the "pot".
No clue what happens here.