Hello,
Customer is on 8.1 2016-04-14
Recently additional company configured with LiveSync clients. On the second company it is not possible to do row operations (like Amend Line or Delete Row). The moment you highlighted a row, the highlight is removed before you click Amend or Delete.

Noticed that when I put the mouse cursor In Item/Command field it started blinking fast.
This issue does not happen when working online or with LiveSync from the first company.

Thx
Mohamed Saad