UI minor "bug" since 5.5.*

Hi there is some minor bug in UI since 5.5.x
I'm removing or rearranging some unnecessary tool-bars for more screen space.
So when minimizing WinSCP to Windows7 toolbar and restoring back, there appears some space.
please check attached image.
after pushing new session button space disappears

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should be
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Thanks for your report. Though I cannot reproduce this.
By "toolbar", do you mean "taskbar" or "system tray" (taskbar status area)?
Can you please confirm that the bug does not appear with 5.2.7?
Can you post a full window screenshot before minimizing and after restoring?