Extra Title Bar in All Stacks

[Sannyasin Brahmanathaswami]

confirmed.

Create new stack (leave it untitled) 

… I am getting a second "tab bar"  under the *real* title bar of the new stack

Create second new stack
  
Hmmm,  yes, fascinating, I can drag the title bar slowly onto the first stack and let go

Now I have
                       Untitled 2           		# top of window

untitled 1 *      |     Untitled 2 *   	# two tabs

-- Nothing in the view menu relatedt to tabs.
-- turn off resizeable in untitled 2 and the stack "jumps" out to a new window.

OK, none of my stacks in this project need to be resizeable I can live with it, but 
a) why would it appear suddently and 
b) why doesn't it go away after delete settings?

Is there another place where the engine is writing prefs or settings that we don't know about?  It wasn't happening yesterday, in stacks that *were* resizeable. Something I did today triggered this new behavior.

BR

On 3/25/17, 3:45 PM, "use-livecode on behalf of Colin Holgate via use-livecode" <use-livecode-bounces at lists.runrev.com on behalf of use-livecode at lists.runrev.com> wrote:

    It’s a standard Sierra feature that LiveCode doesn’t fully support yet. The View menu is supposed to have a Show Tab Bar menu item, which would hide the tab bar part of the window. The option is there sometimes, so if you’re lucky enough to see it you can deselect it.
    
    If the tab bar is showing you can drag one stack’s tab bar to another stack’s tab bar to dock them together. There should also be a + button in the tab bar too, which in LiveCode I suppose would start a new stack as a tab.
    
    Stacks that are docked together are effectively the same card size, so if LiveCode does do better support it should be possible to start a new stack as a tab, and at the card side of the existing stack, without you having to say what size stack you want.
    
    
    > On Mar 25, 2017, at 6:20 PM, Sannyasin Brahmanathaswami via use-livecode <use-livecode at lists.runrev.com> wrote:
    > 
    > Something bizarre started happening this afternoon
    > 
    > Mac OSx 10.12.3 Sierra
    > LC 9DP5
    > 
    > Stack are opening with a second title bar underneath the *real* title bar.
    > 
    > see http://wiki.hindu.org/uploads/extra-title-var.jpg
    > 
    > I deleted my settings, removed all plug-ins, deleted settings again, rebooted… stack still appear with a second title bar.
    > 
    > any clues to what is wrong?
    > 
    > BR
    > 
    
    
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