Is this a bug?

David Bovill david.bovill at gmail.com
Tue Oct 13 18:08:46 EDT 2020


Does anyone else have this behaviour in MacOs? Note I have no plugins installed or loaded in the demo. The same behaviour happens on different laptops.

• https://vimeo.com/466580164

On 9 Oct 2020, 16:33 +0100, Paul Dupuis via use-livecode <use-livecode at lists.runrev.com>, wrote:
> Sorry,
>
> When I read you posts and saw "windows" I thought you were talking about
> this happening on Microsoft Windows.
>
> I have seen something similar on macOS, but only when you have dual
> monitors and the second monitor has it's top positioned higher than the
> primary monitor.
>
>
>
>
>
>
> On 10/9/2020 10:23 AM, Paul Dupuis via use-livecode wrote:
> > Window 10 has a snap to feature on by default that will try to snap
> > any window of any application to the edges and resize it to have the
> > screen (or perhaps other options) if the windows is being dragged and
> > the mouse moves close to a screen edge. I have not explored the
> > feature fully, so I am not sure of the details.
> >
> >
> >
> > On 10/9/2020 9:48 AM, David Bovill via use-livecode 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 <david.bovill at gmail.com>,
> > > wrote:
> > > > Also tested on Livecode 8.1.5 with same results.
> > > > On 9 Oct 2020, 14:00 +0100, David Bovill <david.bovill at gmail.com>,
> > > > 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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