id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking
539	OpenLayers map on homepage may appear blank on new install	Jeff McKenna	Jeff McKenna	"- initially reported by @tchaddad
- honestly I once saw this happen during the 5.2.0 release candidate process
  - in my case, it only happened on my heavily used machine, with tons of tabs open, in Firefox (that was running a long time, weeks likely, without an update)
    - by ""heavily used"" I mean I was running the setup.exe installer over and over again into different ports and folders and tabs, and eventually one run caused a blank map in the !OpenLayers map on MS4W's homepage (127.0.0.1)
  - clearing the browser cache didn't fix it
  - magically, I closed Firefox (hard restarted it) and I have never seen this issue since

Needs more research (and hopefully steps to replicate here).  From quick research I notice other !OpenLayers users with somewhat similar reports:
- https://github.com/openlayers/openlayers/issues/15839

This will be a tough one.  Hmm.  Any more findings @tchaddad??

Seems like some sort of memory issue.

Difficult to know yet if a change is needed inside the actual !MapServer source code, or to MS4W's embedded !OpenLayers code."	defect	new	critical	5.2.1 release	MS4W - Base	5.2.0			TC Haddad