After the form Loads/On Demand Related list is broken when Omit columns if empty is true configured on any empty list Problem:After upgrading to the Australia version, empty related lists with the option 'Omit columns if empty' are displayed in stacked format instead of tab format for parent records instances and also Filter option(Hamberger menu) and personalize gear doesnt work. This behavior was observed for dot-related lists created from the relationship module. Below error can be observed in console when list loads: js_includes_tinymce.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846&sysparm_substitute=false:1256 Uncaught TypeError: Cannot read properties of undefined (reading 'observe')at klass.observeOnHead (js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:1280:43)at klass.updateTable (js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:6076:30)at klass.initialize (js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:6063:8)at new klass (js_includes_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:2:1396)at klass.initialize (js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:5111:19)at new klass (js_includes_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:2:1396)at klass._getListEditor (js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:7036:17)at klass._applyUpdates (js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:6958:25)at klass._prepareTable (js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:7008:8)at klass._onTableLoad (js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:6983:9)observeOnHead @ js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:1280updateTable @ js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:6076initialize @ js_includes_list_edit_doctype.jsx?v=07-04-2026_0037&lp=Mon_Jun_22_12_16_15_PDT_2026&c=32_846:6063 Steps to reproduce: 1. Access an Australia Patch 2 instance or above instance2. Go to Preference -> Display -> Load related lists in classic forms.3. Set the value to After the form Loads or On Demand4. Open any incident record.5. Go to any empty related list.6. Click on the list menu -> Configure -> List Control.7. Enable Omit columns if empty. Expected behaviorThe related list should be loaded correctly. Actual behaviorThe related list is broken. Root Cause: The issue is confirmed to be related to an existing defect PRB2020153 in the system. Resolution: PRB2020153 is Fixed in Brazil release. As a temporary workaround, "Omit columns if empty." should be unchecked from list control.