Fixed #1358 - Overlay aligning calculation defect

src/components/autocomplete/AutoComplete.vue

@@ -631,6 +631,8 @@ export default {
 .p-autocomplete-panel {
     position: absolute;
     overflow: auto;
+    top: 0;
+    left: 0;
 }
 
 .p-autocomplete-items {

src/components/calendar/Calendar.vue

@@ -2221,6 +2221,8 @@ export default {
 .p-datepicker {
 	width: auto;
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-datepicker-inline {

src/components/cascadeselect/CascadeSelect.vue

@@ -373,6 +373,8 @@ export default {
 
 .p-cascadeselect-panel {
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-cascadeselect-item {

src/components/colorpicker/ColorPicker.vue

@@ -607,6 +607,8 @@ export default {
 
 .p-colorpicker-overlay-panel {
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-colorpicker-preview {

src/components/confirmpopup/ConfirmPopup.vue

@@ -228,6 +228,8 @@ export default {
 .p-confirm-popup {
     position: absolute;
     margin-top: 10px;
+    top: 0;
+    left: 0;
 }
 
 .p-confirm-popup-flipped {

src/components/datatable/DataTable.vue

@@ -2052,6 +2052,8 @@ export default {
 
 .p-column-filter-overlay {
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-column-filter-row-items {

src/components/dropdown/Dropdown.vue

@@ -734,6 +734,8 @@ input.p-dropdown-label  {
 
 .p-dropdown-panel {
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-dropdown-items-wrapper {

src/components/menu/Menu.vue

@@ -214,6 +214,8 @@ export default {
 <style>
 .p-menu-overlay {
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-menu ul {

src/components/multiselect/MultiSelect.vue

@@ -707,6 +707,8 @@ export default {
 
 .p-multiselect-panel {
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-multiselect-items-wrapper {

src/components/overlaypanel/OverlayPanel.vue

@@ -270,6 +270,8 @@ export default {
 .p-overlaypanel {
     position: absolute;
     margin-top: 10px;
+    top: 0;
+    left: 0;
 }
 
 .p-overlaypanel-flipped {

src/components/password/Password.vue

@@ -316,6 +316,8 @@ export default {
 
 .p-password-panel {
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-password .p-password-panel {

src/components/tieredmenu/TieredMenu.vue

@@ -192,6 +192,8 @@ export default {
 <style>
 .p-tieredmenu-overlay {
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-tieredmenu ul {

src/components/treeselect/TreeSelect.vue

@@ -467,6 +467,8 @@ export default {
 
 .p-treeselect-panel {
     position: absolute;
+    top: 0;
+    left: 0;
 }
 
 .p-treeselect-items-wrapper {