Steps to reproduce: 1- Open https://lichess.org/training/72445 2- the bottom right corner of the chess board has a resize indicator 3- try to drag it to resize the board Expected outcome: the board is resized Actual outcome: the board does not resize Working fine on Chromium and Firefox
This issue is reproducible on : Safari Technology Preview 12.2/Webkit 14608.1.23.1
*** This bug has been marked as a duplicate of bug 139681 ***