Fix #28937: Text Editor Selection (Scroll Bar)

Do not start selection if mouse cursor.x >= scrollbar.x

source/blender/editors/space_text/text_ops.c

@@ -2583,6 +2583,9 @@ static int set_selection_invoke(bContext *C, wmOperator *op, wmEvent *event)
 	SpaceText *st= CTX_wm_space_text(C);
 	SetSelection *ssel;
 
+	if(event->mval[0]>=st->txtbar.xmin)
+		return OPERATOR_PASS_THROUGH;
+
 	op->customdata= MEM_callocN(sizeof(SetSelection), "SetCursor");
 	ssel= op->customdata;
 	ssel->selecting= RNA_boolean_get(op->ptr, "select");