I have a problem with the newsticker under two Windows XP clients (SP3) with IE8 and net.framework 4.0.
The installed xibo-version is 1.7.3 (server + player).
I inserted a new region in a fresh layout with a xibo ticker and configured the ticker with a RSS feed.
Now the tickertext on the client is cut off on the right side of the region while the layout is playing. About two or three chars are missing there in every line.
I tried to make the width of the region bigger and many other things, but nothing helped to solve this problem.
I have tried the thing with the registry now, but unfortunately without success.
What I can say until now is (tested with Xibo 1.7.3):
Client: Windows XP Pro (SP3): chars cut off
Client: Windows 7: chars OK
Client: Windows 8.1: chars OK
Client: Windows XP Pro (SP3) with activated CEF in Xibo: chars OK (but short black background of a region when a region changes the media + crashes of the Xibo Player sometimes)
I guess that this problem is related to the scaling: The ticker text seems not to be scaled (correctly) under Windows XP Pro SP3 (32bit).
As stated, with Xibo 1.4.2 I had no problems with the ticker under XP.
Unfortunately we had to move on with support for newer browsers, etc. From your description it sounds like a problem with the older version of IE that is available on XP.
You could try changing this bit of code so that it always used the transitional template: