id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
7745	[PATCH] TagCheck reports an identical warning multiple times after viewing validator preferences	mrwojo	team	"With r5210

Repro:

1. Create a simple way tagged `highway=service` and `barrier=wall`.
2. Validate. You should see a warning: ""barrier used on a way - Suspicious tag/value combinations (1)"".
3. Open JOSM's Preferences dialog. Open the Validator settings page. Just press OK.
4. Validate. The number of warnings has incremented: ""barrier used on a way - Suspicious tag/value combinations (2)"". The single problematic way is being reported twice with an identical warning.

`TagCheck.initializeData()` is called once on startup and when the user presses ""OK"" on the Validator Preferences dialog. `checkerData` (and a few other static lists) is appended to every time `initializeData()` is called, but it's never reset anywhere, so checks are added redundantly without bound."	defect	closed	minor		Core validator		fixed