do not use position fixed

apps/app/src/components/Admin/Users/UserMenu.tsx

@@ -99,7 +99,7 @@ const UserMenu = (props: UserMenuProps) => {
         {(user.status === USER_STATUS.INVITED && !isInvitationEmailSended)
         && <i className={`fa fa-circle text-danger grw-usermenu-notification-icon ${styles['grw-usermenu-notification-icon']}`} />}
       </DropdownToggle>
-      <DropdownMenu positionFixed>
+      <DropdownMenu>
         {renderEditMenu()}
         {user.status !== USER_STATUS.DELETED && renderStatusMenu()}
         {user.status === USER_STATUS.ACTIVE && renderAdminMenu()}

apps/app/src/components/Bookmarks/BookmarkFolderMenu.tsx

@@ -191,9 +191,8 @@ export const BookmarkFolderMenu = (props: BookmarkFolderMenuProps): JSX.Element
     >
       {children}
       <DropdownMenu
-        right
+        end
         persist
-        positionFixed
         className='grw-bookmark-folder-menu'
       >
         { renderBookmarkMenuItem() }

apps/app/src/components/Page/CopyDropdown.jsx

@@ -119,7 +119,6 @@ const CopyDropdown = (props) => {
         </DropdownToggle>
 
         <DropdownMenu
-          positionFixed
           style={{ zIndex: 1016 }} /* zIndex: 1016 // larger than z-index value of grw-subnav-fixed-container in GrowiSubNavigationSwitcher.module.scss */
         >
           <div className="d-flex align-items-center justify-content-between">

apps/app/src/components/RevisionComparer/RevisionComparer.tsx

@@ -77,7 +77,7 @@ export const RevisionComparer = (props: RevisionComparerProps): JSX.Element => {
           >
             <i className="ti ti-clipboard"></i>
           </DropdownToggle>
-          <DropdownMenu positionFixed end >
+          <DropdownMenu end >
             {/* Page path URL */}
             <CopyToClipboard text={generateURL(currentPagePath)}>
               <DropdownItem className="px-3">