Launchpad Selector window is blocking access to my stages

[PTNLemay]

I have Kerbal Engineer Redux and a bunch of part-packs installed, but I'm not sure if they're causing this.  This has been a problem on 1.7 and 1.8 for ages, but I've always been able to ignore it because my stages rarely go that high.  But now I have a huge Eve Return prototype I'm working on, and I absolutely need to reach those top stages.  But the Launchpad selector window won't go away.  I feel this is a silly problem but I cannot find a way to fix it.

 

[jimmymcgoochie]

Quit the editor and open it again? If that doesn’t do it, quit the editor, disable additional launch sites, open editor again; and if that doesn’t work either, reload the game.

[HansAcker]

12 hours ago, PTNLemay said:

But the Launchpad selector window won't go away

I noticed that too and could also ignore it so far. I find one mention of it in the bug tracker (referring to the same problem) but not as its own bug:

https://bugs.kerbalspaceprogram.com/issues/24950

A quick search didn't turn up any other reports of it and the response suggest a mod conflict. I don't have access to my bug tracker account right now, so maybe go ahead and open a new bug for this, if you can reproduce it without mods.

Mods that hook into the launch button could be the cause here.