Bug:
The Tracker's "Single line text"="String" field is useful for Summaries in any trackers that are parents to User Stories, i.e. Epics, Themes, Adventures. However, when editing artifact fields from the screen modal within Agile Dashboard Backlog (=editing fields NOT from tracker), the SIZE of the "String" field is displayed the same as for Select Boxes (28 characters), albeit being set to for example 56 in tracker. Hence, the Summary string is cropped to 28 chars in length. This should be fixed in the backlog modal view, so that "String" field respects its SIZE setting like it is done by the "Text" fields, i.e. "Text" fields do stretch accordingly to their in-tracker size setting.

Additional enhancement:
to extend the size of "Selectbox" from 28 to 56 chars in the backlog modal view.
Rationale: some Workflow Process Definitions implemented as Selectbox values (like "Ready for Deployment" etc.) are slightly longer than 28 chars, and thus do not display nicely.