Fixed regex issue by replacing \s with [:space:] for better Qt compatibility.

Author: MesterPerfect

ui/dialogs/find.py

@@ -46,7 +46,7 @@ def initUI(self):
         self.search_label = QLabel('اكتب ما تريد البحث عنه:')
         self.search_box = QLineEdit(self)
         self.search_box.setText(self.search_phrase)
-        regex = QRegularExpression("[\u0621-\u0652\u0670\u0671\s]+")  # Arabic letters, hamzas, diacritics, and spaces.
+        regex = QRegularExpression("[\u0621-\u0652\u0670\u0671[:space:]]+")  # Arabic letters, hamzas, diacritics, and spaces.
         validator = QRegularExpressionValidator(regex)
         self.search_box.setValidator(validator)
         self.search_box.textChanged.connect(self.OnEdit)