I just noticed this myself. I thought that this is only on my laptop. Usually I have a desktop with two monitors. I do not remember, when this started.
yep - all my machines look the same. Unfortunately.
It was correct yesterday, incorrect today. Is that screen's resources partly fetched over the internet?
I have seen this effect a few times when something like a firewall is blocking the internet access or when you are "somehow" offline ("somehow" like in "Connected to Wifi but not to the internet"). At least for me, it happens *only* when I'm connected to a wifi hotspot (like in a train, plane, or hotel), but only get to the portal login page of the hotspot but are not connected yet to the internet.
If I remember right, there is already a ticket for this "bug" and afaik it will be fixed in the next release.
No, that can't be the case: my connection is via Ethernet to the router and I'm here in the browser Firefox with the very same connection:
IMHO something is damaged in the IE rendering machine which FM uses here.
welcome.html is presented correctly in the browser, also in IE which still can be found on Win 10 - although not recommended any more by MS.
There was no change in the OSbuild: it is still 10.0.18363.778 as it was yesterday, but at least 2 Security updates (Security Intelligence Update for Windows Defender Antivirus - KB2267602 (Version 1.315.430.0 yesterday 17.16, 1.315.471.0 today 09.08 and 1.315.501.0 today 21.03). IMHO only the last one yesterday is relevant here, although I did not notice this strange behaviour of the Welcome screen yesterday between 17.00 and 19.00 when I closed the system
Have now switched connection from Ethernet to WLAN - same behaviour of FM-15
Guess FM uses some fallback resources if there's no connection, because offline it looks fine. When I connect and restart FM the odd startup screen appears again.