When content is highlighted on any page of Stewardship Tier, if the backspace key is selected, all content highlighted on the Stewardship Tier page is deleted. This happens when the WebPage Spell-Check Chrome plugin extension is enabled.
Disable the WebPage Spell-Check Chrome plugin extension. The intended purpose of this extension is to allow for the manipulation of all text rendered on a web page. This lets users identify and correct spelling mistakes directly on the web page and retain settings for the sites being developed or maintained. Consequently, when text is highlighted on the web page, selecting the backspace key deletes the highlighted content.