I’m working on a SAP Fiori Elements V4 (OData V4) app using a sap.ui.table.GridTable.

Users edit a “description” field in a GridTable column. For single-line inputs, users don’t see any character counter, so they often exceed the max length and only notice at save time.

In UI5, sap.m.TextArea can show the exceeded text / counter, but when FE renders the field as a TextArea, the GridTable row height grows and the layout becomes inconsistent.

What I want:
- keep the column visually single-line (same row height as other inputs)
- show a character counter
-allow scrolling for long text instead of growing height (rows=1, growing=false)

What I tried:

1. overriding FieldGroup and/or LineItem fields with a custom fragment template that renders sap.m.TextArea.
   valueLiveUpdate="true" showExceededText="true" width="100%" /></p> </li> <li><p>Adding it to controlConfiguration<br /> - Either nothing changes (template not applied)<br /> - Or the entire table disappears</p> </li> </ol> <p>How can I add a live character counter to a single-line editable column in a Fiori Elements V4 GridTable (without increasing row height), using supported annotations or extensions?</p> <p>Any help would be appreciated.</p> </div> </div> <div class="tags"> <span class="tag">sapui5</span> <span class="tag">sap-fiori</span> <span class="tag">odata-v4</span> <!--<span class="tag">Async</span>--> <!--<span class="tag">Promises</span>--> </div> </div> <!-- Add Answer (only visible if logged in) --> <div id="addAnswerSection" class="add-answer" style="display: none;"> <h4>Your Answer</h4> <form> <div class="mdl-textfield mdl-js-textfield"> <textarea class="mdl-textfield__input" rows="4" id="answer" > Write your answer...