OpenCPN 5.6 sticky MBTiles

[cpharry]

I just upgraded and in the process I loaded a bunch of MBTiles for Mexico. I can get the tiles to display using the chicklets on the bottom of the chart, but I can not change to anything else once I have clicked on that first MBTile.

I had not previously been using tiles or in specific these tiles so I don't know if this was an issue before the upgrade or not.