The height of row is too much when displaying History with the type of information Text.
I found that the reason for this is the tag <pre>Custom test string</pre> in HTML code.
I propose to remove these tags, since they provide no benefit when displaying Text data.
The screenshot shows two lines with the manually removed tags in the HTML code.
Fonts of Value are also improving.

Maybe this should link this request to https://support.zabbix.com/browse/ZBX-2201?