I recently switched to Tiled 1.2.0, and since I use a lot of maps, I like using the Maps view to quickly navigate between different maps. The maps we use are saved in the JSON format, but the new Tiled version doesn’t show maps with this extension. I can see .tmx and .xml files, but those are about the only extensions shown as far as I can tell.
Hmm, this problem is similar to the following issue:
The fix for that issue didn’t fix it for the Maps view. I’ll try to push a fix for the Maps view soon as well. Thanks for reporting the issue!
To be included with Tiled 1.2.1: