I recently posted an issue with selecting a shipyard when a combat result icon was over the same cell.  Now, I am finding that, as I am playing the latest version (see first screen snapshot below), the game has other similar issues.  I have included a link to a save (below) that should allow you to replicate the issue by performing the following steps:

1. From the planets list, select the core world named "Merrill III" (see second screen snapshot below)
2. You should be able to see that there is a fleet containing 2 ships positioned in a cell that is between Merrill II and Merrill III and under the label for Merrill II (see third screen snapshot below)
3. Try clicking on the fleet to select it.  You will not be able to.  No matter how many times you click, you will only be able to select the planet.
4. The only way to select the fleet is to zoom in far enough that the label is no longer covering the fleet or wait until clicking on the "next ship" icon eventually takes you to it.

Apparently, the programmers, in their infinite wisdom, have decided that the planet label is the only thing of importance in any cell that is underneath it.  Alternatively, if there is a stack of ships and/or fleets on a cell (not covered by a planet label!), you can click repeatedly on that cell and the focus will rotate through each ship or fleet with each click.  I recommend that you implement this same logic for EVERYTHING that is visually in a cell regardless of what it is (ship, asteroid, combat label, planet label, etc.).  Another possible solution is that, whenever a user clicks on a cell with more than one item in it, you can popup a window with a list of the items in the cell and allow the user to select the item they want.

https://www.dropbox.com/s/pnif6e4pbo9nufh/ClickIssue.GC4Sav?dl=0