Is WordPress editor jumping down slightly when you click?

Recently we've encountered a small but very irritating glitch in the WordPress editor whereby the content editor will jump down by a line when clicking in the text area.

After a bit of investigation we discovered this can be solved by disabling the "Enable full-height editor and distraction-free functionality" checkbox in the Screen Options tab in the top-right of an edit page.

We're still investigating the cause of the issue but we'll be sure to update here as soon as we find out!

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