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Details

Type: Bug
Resolution: Unresolved
Priority: P2: Important
Fix Version/s: None
Affects Version/s: 6.5.1, 6.5.2, 6.7.3
Component/s: GUI: Text handling, Quick: Core Declarative QML
Labels:
None
Environment:
Qt 6.3.2, 6.5.1
macOS 13.4.1

Description

TextEdit with textFormat: TextEdit.RichText, white-space:pre-wrap (this is required, because RichText collapses whitespaces by default), wrapMode: Text.Wrap - fails to break text into lines when text exceeds width.

This is a regression since 6.3.2.
I was able to reproduce it only with specific conditions - a combination of some spaces (U+0020) and tab (U+0009).
The long line of spaces is not wrapped (this has changed since 6.3.2, as can be seen on screenshots), and it's kind of expected with white-space:pre-wrap (or not? spaces should be preserved, but probably wrapped also, as regular text)
Spaces alone do not break the wrapping of the rest of text, but once you add a tab, the text wrapping is not working anymore. And this is a regression since 6.3.2. Text wrapping should respect TextEdit's width.

6.3.2

6.5.1

Sample code:

import QtQuick
import QtQuick.Window
import QtQuick.Layouts

Window {
    width: 640
    height: 480
    visible: true

    ColumnLayout {
        id: layout
        x: 20
        y: 20
        width: 200

        TextEdit {
            id: text
            Layout.fillWidth: true
            readonly property string _spaces: '                                                                       '
            readonly property string _tab: '	'
            readonly property string _part: 'NoWhitespaceNoWhitespace(<a href="https://doc.qt.io/qt-6/qml-qtquick-textedit.html" style="color:#2b95f0;text-underline-style:solid;">NoSpacesHere⁩</a>)'
            readonly property string _br: '<br>'
            readonly property string _text: _spaces + _tab + _part + _part + _br + _part + _br
            text: '<span style="white-space:pre-wrap">' + _text + '</span>'
            wrapMode: Text.Wrap
            textFormat: TextEdit.RichText


            Rectangle { // to show geometry of TextEdit
                anchors.fill: parent
                color: Qt.rgba(0,0,0,0.2)
            }
        }
    }
}