Problem in grid with record components

During our upgrade to 9.1d we are experiencing problems using record components.

Please download this:
https://mega.co.nz/#!VERVwDQb!TZ-YYUPrcDMVnw3HDUhIyw_AAD0mjhaXOjDQO132xT4

and uncompress inside "isomorphic/system/reference/"

then open it as "http://host:port/isomorphic/system/reference/IssueTest.html"

With 26-May-2012 8.3d everything works fine, but with 28-Aug-2013 9.1d there are the following issues:
* Just when it is loaded, the icons column increases its width a bit
* If you scroll down and then you scroll up, there grid gets broken, and you can easily lost "SKU" column contents (which is a simple recordComponent that adds the "%" symbol)

Here you have also a video that proves how the issue can be reproduced, both in our application than using the provided rar file: http://screencast.com/t/cMRRqljZ86A

Thanks and regards