last used tags displayed wrong, when value has multiple less-than/greater-than characters

[alv]

The last used tags selection list renders values with multiple less-than/greater-than wrong.
Steps to reproduce:
1) Enter, say, traffic_sign=FI:<<>> (there's no "legal code" for such signs)
2) start adding the next tag
3) previous tag displayed is cut off at the start of "<", and the last ">" is displayed in a new "box"

[alv]

less-than and greater-than characters affect display in the last tags added list.

[Don-vip]

Replying to alv:

traffic_sign=FI:<<>>

Is it a real tag value ?

[alv]

To some extent unfortunately, yes. The best we could come up with atm. All other signs have a number in the legislation, but these don't "exist".

The display bug happens whenever key or value has a "<", everything between "<" and the next ">" is sripped as if it were html markup.

[Don-vip]

In 5697/josm:

fix #8398 - Correct display of tags containing XML entities