Use normal QtQuick.Shortcut

src/qml/Base/HScrollableTextArea.qml

@@ -41,7 +41,5 @@ ScrollView {
             event.modifiers & Qt.AltModifier ||
             event.modifiers & Qt.MetaModifier
         ) event.accepted = true
-
-        Keys.forwardTo: mainUI.shortcuts
     }
 }

src/qml/Base/HShortcut.qml

@@ -1,10 +1,5 @@
 import QtQuick 2.12
 
-QtObject {
-    signal pressed(var event)
-    signal held(var event)
-    signal released(var event)
-
-    property bool enabled: true
-    property var sequences: ""  // shortcut string array of shortcut strings
+Shortcut {
+    context: Qt.ApplicationShortcut
 }

src/qml/Base/HShortcutHandler.qml

@@ -1,65 +0,0 @@
-import QtQuick 2.12
-
-Item {
-    id: shortcutHandler
-
-    Keys.onPressed: {
-        let shortcut = match(event)
-        if (! shortcut) return
-
-        event.accepted = true
-        event.isAutoRepeat ? shortcut.held(event) : shortcut.pressed(event)
-    }
-    Keys.onReleased: {
-        if (event.isAutoRepeat) return
-        let shortcut = match(event)
-        if (! shortcut) return
-
-        event.accepted = true
-        if (shortcut && ! event.isAutoRepeat) shortcut.released(event)
-    }
-
-
-    readonly property var modifierDict: ({
-        Ctrl:  Qt.ControlModifier,
-        Shift: Qt.ShiftModifier,
-        Alt:   Qt.AltModifier,
-        Meta:  Qt.MetaModifier,
-    })
-
-
-    function match(event) {
-        for (let i = 0;  i < shortcutHandler.resources.length; i++) {
-            let shortcut = shortcutHandler.resources[i]
-
-            if (! shortcut.enabled) continue
-
-            if (typeof(shortcut.sequences) == "string") {
-                shortcut.sequences = [shortcut.sequences]
-            }
-
-            for (let i = 0;  i < shortcut.sequences.length; i++) {
-                if (sequenceMatches(event, shortcut.sequences[i])) {
-                    return shortcut
-                }
-            }
-        }
-        return null
-    }
-
-    function sequenceMatches(event, sequence) {
-        let [key, ...mods] = sequence.split("+").reverse()
-
-        key = key.charAt(0).toUpperCase() + key.slice(1)
-
-        if (event.key !== Qt["Key_" + key]) return false
-
-        for (let [name, code] of Object.entries(modifierDict)) {
-            if (mods.includes(name) && ! (event.modifiers & code)) return false
-            if (! mods.includes(name) && event.modifiers & code) return false
-        }
-
-        return true
-    }
-
-}

src/qml/Base/HTextField.qml

@@ -49,6 +49,4 @@ TextField {
         event.modifiers & Qt.AltModifier ||
         event.modifiers & Qt.MetaModifier
     ) event.accepted = true
-
-    Keys.forwardTo: mainUI.shortcuts
 }