TYPO3 Core

I have two extension those adds fields to same table.
For Typo3 version 4.2 all is well, But after migrating to version 6.2 of typo3 only fields added by an extension will be visible and others fields added by other extension will be invisible.
If I install a single extension then their fields visible. But if I install the two extensions only the fields added by one of them will be visible and the other fields will be invisible.

• extension_1: ext_tables.php

t3lib_div::loadTCA('table_name');
t3lib_extMgm::addTCAcolumns('table_name',$tempColumns,1);
t3lib_extMgm::addToAllTCAtypes('table_name','tx_myext_newfield1');

• extension_2: ext_tables.php

t3lib_div::loadTCA('table_name');
t3lib_extMgm::addTCAcolumns('table_name',$tempColumns,1);
t3lib_extMgm::addToAllTCAtypes('table_name','tx_myext_newfield2');

I have to change my code and still same problem.

t3lib_div::loadTCA('table_name');
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTCAcolumns('table_name',$tempColumns);
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addToAllTCAtypes('table_name','tx_myext_newfield1');

t3lib_div::loadTCA('table_name');
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTCAcolumns('table_name',$tempColumns);
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addToAllTCAtypes('table_name','tx_myext_newfield2');