Look and feel theme setting for 'Windows' has developed amnesia

[Ldp]

Assumes JOSM was set to 'Windows' laf and another change was made somewhere in the settings, and JOSM was restarted to activate that setting.

1) Load JOSM, notice Look and Feel is 'Metal'.
2) Set it to 'Windows' and exit JOSM.
3) preferences file has no laf= entry.
4) Restart JOSM, which is now in 'Windows' style. Open preferences, notice the laf field is set to Metal again. Only say OK.
5) Stop/restart JOSM, which is now back in 'Metal'.

Setting laf to another value works. It's only the 'Windows' style that's forgotten. This is usually triggered when you change some other setting, and then restart, only to be greeted by another theme.

[stoecker]

NOTE for development: Hmm, it seems somehow the plattform hook does not detect the Look and feel before it is used.

Probably preference file is not initialized early enough or plattform hook is too early.

[stoecker]

(In [2428]) fixed #3893 - Windows no longer remembered Windows Look and Feel