The drawing of the port let collapses

Document ID : KB000112497
Last Modified Date : 30/08/2018
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Question:
When the following actions are made then the 1st row on the portlet is not shown and do you have any workaround ?
This happens on Chrome and does not happen on IE.
1. enlarge the window
2. Scroll down and go back to top.

User-added image
Answer:
This does not happen with zoom:100% or 125% but happens on zoom :150%.

[Zoom:100% or 125%]
User-added image

If you click the tiny space on 1st row then 1st row shows successfully.

This happens on the zoom percentage so that this is the issue on Chrome with zoom percentage.