I regularly experience that photos with jQuery v3 are not loaded properly no matter what theme I use. Fresh install or not remains the same. Anyone else experiencing the problem or am I the only one?
Most of the time they load as in first attachment and on refresh they become normal like attachment 2....

@mwindey
Sometimes they load and sometimes no?

@MB Themes

Correct... If you open a listing then 50% off time you get the images full sized... Refresh page corrects them and shows them normal sized.
It is frustrating that in most off the times you have to refresh the page to have a normal view.
It is on all items and all types of browsers.... Same on mobile and tablet view.

@mwindey
Can you send URL?

Page: in PM

There is many errors in your console (from minify, from ads scripts, ...) and sometimes takes too long to load scripts (>2000ms).
This seems to be also important related to fortumo that sometimes fail to load some scripts:
Uncaught ReferenceError: LazyLoad is not defined
    at HTMLDocument.<anonymous> (fmp_loader.js:8:3)

I"ve seen the errors on google ads and fortumo but also a fresh install without fortumo and google ads does the same.
Going back to jQuery V1 and everything is normal except security 
Most errors in lighthouse are showing me this:
jquery.min.js:2 jQuery.Deferred exception: $(...).masonry is not a function TypeError: $(...).masonry is not a function
    at HTMLDocument.<anonymous> (https://mydomain.be/oc-content/themes/veronika/js/global.js?v=900:769:36)
    at e (https://mydomain.be/oc-includes/osclass/assets/js/jquery3/jquery.min.js:2:30038)
    at t (https://mydomain.be/oc-includes/osclass/assets/js/jquery3/jquery.min.js:2:30340) undefined
S.Deferred.exceptionHook @ jquery.min.js:2
t @ jquery.min.js:2
setTimeout (async)
(anonymous) @ jquery.min.js:2
c @ jquery.min.js:2
fireWith @ jquery.min.js:2
fire @ jquery.min.js:2
c @ jquery.min.js:2
fireWith @ jquery.min.js:2
ready @ jquery.min.js:2
B @ jquery.min.js:2
jquery.min.js:2 jQuery.Deferred exception: $(...).validate is not a function TypeError: $(...).validate is not a function

Try to disable force image aspect

@MB Themes,

Biggest problem was/is fortumo. Even though i cut the code out of my pages, having it activated in admin was enough to create the problem with jQuery V3.
I've noticed they use jQuery V1.7.1 and that there solution would be to use jQuery.noConflict().
Since i have never heard of it i'm not sure if this is doable to use it.....

You cannot modify their script, but you can try whatever to get it fixed.
ALso keep in mind fortumo script does not need to be loaded immediately, you could also defer it by 1-2 seconds ... so once site is rendered and loaded, fortumo will load at the end.

Thanks for the tip on deferring the script, i didn't think of it myself 
For now it is looking good with jQuery V3 so let's wait for a couple off days to see if i am still happy