SR Number: 119052425001510 Setup: Generate a new Sales Order. On the Sales Order form set the following: 1. Collapse the Action pane 2. Minimize the Sales order header 3. Maximize the Sales order lines 4. Minimize the Line details This setup is in-order to view as many Sales Order lines as possible on the grid. Repro Steps: Add lines until approximately 25 products on the sales order. Continue to add lines by using down arrow to generate a new line and entering product code followed by enter then down arrow again. Repeat steps observing grid behaviour. Symptom: The grid will start to behave erratically, jumping up and down intermittently at the point of adding a new line. Typing the next search item whilst the grid is mid 'up/down' motion also seems to trigger a search without it having been requested. This behaviour has been observed in a Contoso environment with PU26. Hugely negative impact on user experience as part of standard D365 sales order creation process. Idea: Can this erratic functionality please be improved ASAP.