Some people are reporting issues with their print platform being slightly warped, that is being worsened by heating, further causing the heated bed to separate from the platform. Although auto-levelling should compensate for smaller prints, larger prints that take up the entire platform will be affected by the curvature.
We're recommending that people temporarily try to *carefully* bend the platform straight as we are working on upgrading this component to a thicker aluminium sheet that also has the heating element built into it. We’re expecting the new platform to be a lot more flat and rigid, and also distribute heat better and more evenly. More news on this to come in the following weeks.