P: SDK: Nested group_box doesn't display title on Windows
A nested viewFactory:group_box doesn't display its title on Windows but does on Mac:

To reproduce, run this script:
local LrColor = import "LrColor"
local LrDialogs = import "LrDialogs"
local LrView = import "LrView"
local f = LrView.osFactory()
LrDialogs.presentModalDialog {title = "Test", contents = f:column {
f:group_box {title = "Outer group box",
f:checkbox {title = "Outer checkbox"},
f:group_box {title = "Inner group box", show_title = true,
f:checkbox {title = "Inner checkbox"}}}}}
Tested on LR 11.0.1 / Windows 10 and Mac OS 11.6.
