PB 2017 R2 Build 1769
We have a huge app which I did a trial conversion of from 12.5 to 2017. (Took 50 minutes)
There is a window with a Rich Text control that is used by end users to enter text which is saved to the database as HTML and is displayed in a browser by our web app which is developed separately using ASP.Net/C#.
In PB 2017 when the control is put in Preview mode, it is very narrow and only shows three words per line.
I submitted a bug report and they can't reproduce. I copied the window to a new target to give them as an example. The problem doesn't happen in the demo target.