Hovering over a tag field should display whole data from this tag

see also this more or less diametrally opposite suggestion:

PS: I usually do not make comments on the spelling in posts. I am no native speaker of English and make my fair number of mistakes and therefore depend on the tolerance of the readers.
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But this time, I think that

is not right as it means to use a vacuum cleaner.
I doubt that hoovering a tag field would be beneficial regardless whether it shows the whole data or not.
I think that the better term would be "hovering" as in "hovercraft" or "hoverfly".