Resizable panels / splitters broken in desktop Safari

[amcclain]

No description provided.

[lbwexler]

This seems concerning -- think we should understand what's happening here sooner rather than later

[TomTirapani]

I'm looking into this... it seems this test is failing:
https://github.com/xh/hoist-react/blob/develop/desktop/cmp/panel/impl/dragger/DraggerModel.ts#L256-L258

DragEvent's buttons is 0 in Safari, but 1 in Chrome, which causes us to exit out of the drag early here:
https://github.com/xh/hoist-react/blob/develop/desktop/cmp/panel/impl/dragger/DraggerModel.ts#L93-L96

Investigating why / how this could be the case, and what we can do about it. Seems like a low-level Safari bug to me - will post findings here

[TomTirapani]

I came up with a workaround which resolves the issue:
#3799

I'll keep looking for a better solution / more information