Hovering the mouse over a tile in the tilemap window as described in the beta release notes does not appear to work.
windows 7 74 bit - C2 152 beta
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Can you explain why r152 doesn't exist now?
However it works, there a function you can get tile coordenates using mouse hover
http://www.scirra.com/forum/open-source-destroyable-tiles_topic80552.html
Closing, can't reproduce, please follow the bug report guidelines if you want your issue to be investigated.
Note the collision polygon is only highlighted in the tilemap bar if it is not the default bounding box.