I don't have the click on fleet bug. I had that twice pre patch. The first was while reloading a couple of units on a fleet and the second while clicking on a newly trained fleet in Gibraltar. Post patch I have trained a fleet (four third rates) in Gibraltar and did not have a CTD. Nor did I have one while sailing along the Caribbean with a fleet with third rates transporting an army. On request from Faction Heir I sailed all around the West Indies with that fleet while clicking on it, but I didn't experience any CTD. I had on some occasions a freeze of several seconds after clicking on a ship. There were several sloops and brigs also transporting agents and armies back to Europa and sailing through the Caribbean. During my try run I split the fleet and and combined the two parts into one fleet again.

Remains the question while a lot of people are having this bug and why a lot of people don't have it.