Yeah looks like the infinite loop bug, pressing undo should fix it. This level will be reworked soon to remove the issue.
EDIT: PYLON-33 has now been reworked in v1.8
44 days ago (+1)
Reworked the level one last time haha. The issue was narrowed down to an odd interaction that the '8' Totems have when a loop is introduced. While I couldn't find a nice solution for the bug itself, I've changed the level so that that particular loop shouldn't be able to arise anymore. Thanks for the bug report!