I can confirm this too. For example, the browser is most of the time unusable since the app is continusly resetting and the page reloaded. The new message is equally annoying as the previous one. I'm so dissapointed...
LG claimed their engineers became aware of it "a couple of weeks ago" - and that there should be a patch available about a week from now...
Fingers crossed for that patch...
Happy NEW 2019 YEAR from LG WebOS Team - Korea.
I hope you will fix all bugs in my Ultra HD TV before end of the World.
http://developer.lge.com/community/forums/RetrieveForumContent.dev?detailContsId=FC26223701&sMenuId=53&contsTypeCode=GEN&prodTypeCode=TV
I have exactly the same issue when watching some video over SmartShare (using DLNA connection). It was perfectly fine for a few days, but now after a few minutes of watching some medium quality content (not heavy on a bandwidth, etc) message appears: "Out of memory. App closed". Youtube works fine. Please solve this immediately!
LG 55LB63