Thanks David, very kind of you to offer. Could we schedule for next week (or 
the one after)? I’m also in a bit of a crunch week myself so next week or after 
would work out better for me as well. 

Cheers,
Mark

> On Oct 13, 2020, at 12:34 PM, David Bovill <[email protected]> wrote:
> 
> Sure Mark. This week I’m doing a sprint on this topic - finishing on Sunday. 
> As part of that work I’ll be recording more videos in Livecode and will post 
> them next week together with some documentation. If you want a quick touch 
> base before that I’d be happy to do a Zoom and do a show / tell.
> On 11 Oct 2020, 11:37 +0100, Mark Smith <[email protected]>, wrote:
>> Completely off-topic, but could you post a brief description of how you made 
>> that video David (or send me a PM)? I have to do something similar in the 
>> near future and it would be good to know what kit/software you recorded with.
>> 
>> Cheers and thanks,
>> Mark
>> 
>>> On Oct 9, 2020, at 3:18 PM, David Bovill via use-livecode 
>>> <[email protected]> wrote:
>>> 
>>> Here is a video describing the bug - or at least I am assuming it is a bug. 
>>> Very curious to see if anyone else is experiencing this issue:
>>> 
>>> • https://vimeo.com/466580164
>>> 
>>> On 9 Oct 2020, 14:48 +0100, David Bovill <[email protected]>, wrote:
>>>> I’m getting pretty curious about this bug :)
>>>> 
>>>> Testing mouse clicks- and not stacks jumping position when moving their 
>>>> location - I find that a stack that is successfully moved between the four 
>>>> quadrants of the screen - accepts mouse clicks accurately in the 
>>>> bottom-left, top-right and bottom right quadrants - but in the top-eft 
>>>> quadrant the mouse-click interactions are offset vertically in a way that 
>>>> is compatible with the stack jump. So if you manage to locate the. Stack 
>>>> without it jumping - in the top-left quadrant the mouse clicks are off.
>>>> 
>>>> Monitor settings are set for default value of the MacBook Pro display. I 
>>>> think I’ll make a short video of this behaviour.
>>>> On 9 Oct 2020, 14:35 +0100, David Bovill <[email protected]>, wrote:
>>>>> Also tested on Livecode 8.1.5 with same results.
>>>>> On 9 Oct 2020, 14:00 +0100, David Bovill <[email protected]>, wrote:
>>>>>> 
>>>>>> Windows intermittently jump to a location on the screen when I move 
>>>>>> windows. It’s got too annoying to ignore.
>>>>>> 
>>>>>> • Is anyone else having this problem?
>>>>>> 
>>>>>> I am testing this on Mojave and Livecode 9.6.1 rc2. I am testing this 
>>>>>> without any of my own code such just was IDE stacks. This I “think” is 
>>>>>> quite a long standing bug that I suspect is related to the global 
>>>>>> coordinate system as I have been working around this for quite a while 
>>>>>> now.
>>>>>> 
>>>>>> 
>>>>>> Detail
>>>>>> The location of the jump seems to be the same horizontal x location. But 
>>>>>> with the vertical value being reset to the halfway point.
>>>>>> 
>>>>>> I am testing by. Simply moving the message box. It is intermittent - so 
>>>>>> occurring about once every 5 moves, and strangely is happening only when 
>>>>>> the top left of the stack window is within the top left quadrant of the 
>>>>>> screen. Using. The following code int eh message box I find the top of 
>>>>>> the message box stack is always 492 after a jump (see below). This 
>>>>>> appears to be related to half the screen less the decorations like menu?
>>> > > > put the screenrect & CR & the rect of stack” Message box"
>>> > > >
>>> > > > 0,0,1680,1050
>>> > > > 215,492,634,640
>>>>>> 
>>>>>> As a further indication that the problem is due to the IDE, I find that 
>>>>>> creating a test stack (no scripts or controls) exhibits the same 
>>>>>> behaviour - but this behaviour can be suppressed by choosing “Suppress 
>>>>>> Messages” from the “Development” menu. This suppression has no effect on 
>>>>>> the message box or other IDE windows which still jump intermittently.
>>>>>> 
>>>>>> The problem is most intense when working with multiple screens. For at 
>>>>>> least a couple of years stacks I create and place on second or third 
>>>>>> monitors receive mouse clicks in the wrong location. This happens on 
>>>>>> different machines, and different. Monitor setups. Only tested on Macs.
>>>>>> 
>>>>>> I am currently creating a multiscreen app - so taking the tracking down. 
>>>>>> Of this bug more seriously. The current tests are one on my laptop 
>>>>>> without external monitors, and having restarted the computer (several 
>>>>>> times). Applications other than Livecode don’t suffer this problem.
>>>>>> 
>>>>>> How should I report this bug - should I submit a video / screen 
>>>>>> recording?
>>>>>> 
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