These are all the newest bundles from the Humble Bundle campaigns, so they are all for CC3+. As Jim says, FT3+ is a stand-alone software anyway.

With the latest update the Help >About option from the menu should tell you which serial number you have used for your CC3+ install.

That might be an indication of an export doing a second rendering pass with a little "hiccup". Try this:

Type EXPORTSETMPPP and hit enter. The command line will show you a number. If you haven't ever changed the setting before it will be 4000000 (four million). Type 40000000 (40 million) and hit enter, then try again.

Have you scrolled down in the Structures catalog? Thew new symbols might not be at the start of the list anymore.

Yes, the system template uses the same symbol catalog as the Traveller sector and subsector maps, so the behaviour of the gas giant is a bit odd there.

If you want to fix it, add the Gas Giant symbol to your map, but don't place it yet. Open the Symbol Manager nad "Edit" the gas giant symbol. "Move" the included bitmap, click the center of the image as the origin of the movement, then place it at 0,0. Close the editing window and save it. In this drawing the symbol should now get placed centered as the planet symbols.

Hi Nikode! That looks as if your selection method by be set to "Select by Layer" perhaps by an aborted macro. Please go to Tools > Options in the menu and under "Select Method" set it to "Select by Dialog or Popup". Does it work properly again, afterwards?