In the image below you see the middle source is unchecked. I can use the selection tool on tiles from the top source just fine, but when I try to use it on the bottom source's tiles I don't see any blue outline. If I then re-check the middle source I see the selection which I had tried to make on the bottom source was applied to the middle source instead even though it was unchecked.
In the image below you see the middle source is unchecked. I can use the selection tool on tiles from the top source just fine, but when I try to use it on the bottom source's tiles I don't see any blue outline. If I then re-check the middle source I see the selection which I had tried to make on the bottom source was applied to the middle source instead even though it was unchecked.