first, thanks for all the excellent work in v 1.2. I have one irritating but not fatal problem: Mac OS 10.14:- the charts aren't stable, viz, a chart will collapse to its minimum size at some random moment when the mouse/touchpad is used. Not always, but frequently. Not desperate, as you can enlarge it again but it's very frustrating. I'm using xygrib on both a MacBook Air, (touchpad), and a Mac Mini, (bluetooth mouse), and this happens on both. I can't make this happen in a predictable way. Impossible problem but any inspiration on what might avoid it would add to my thanks for how incredibly useful this app is
I did some tests on my Macbook and found out that this is probably related to the scrolling function of the touchpad. Everything works fine with a mouse or with just one finger on the touchpad. However as soon as a second finger is added the map behaves as Evariste descripes. So it looks like XyGrib for Mac overreacts a bit when it detects a command to zoom from the touchpad. Zooming with the mouse wheel works perfectly ok.
Hope this helps to find a solution...
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