Troubleshooting Next Experience Issues caused after upgrades.Issue <!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } span { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } h2 { font-size: 24pt; font-family: Lato; color: var(--now-color--text-primary, black); } h3 { font-size: 18pt; font-family: Lato; color: var(--now-color--text-primary, black); } h4 { font-size: 14pt; font-family: Lato; color: var(--now-color--text-primary, black); } a { font-size: 12pt; font-family: Lato; color: var(--now-color--link-primary, #00718F); } a:hover { font-size: 12pt; color: var(--now-color--link-primary, #024F69); } a:target { font-size: 12pt; color: var(--now-color--link-primary, #032D42); } a:visited { font-size: 12pt; color: var(--now-color--link-primary, #00718f); } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } General Tips/Checklist for troubleshooting Troubleshooting Next Experience Issues caused after upgrades. Release<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } span { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } h2 { font-size: 24pt; font-family: Lato; color: var(--now-color--text-primary, black); } h3 { font-size: 18pt; font-family: Lato; color: var(--now-color--text-primary, black); } h4 { font-size: 14pt; font-family: Lato; color: var(--now-color--text-primary, black); } a { font-size: 12pt; font-family: Lato; color: var(--now-color--link-primary, #00718F); } a:hover { font-size: 12pt; color: var(--now-color--link-primary, #024F69); } a:target { font-size: 12pt; color: var(--now-color--link-primary, #032D42); } a:visited { font-size: 12pt; color: var(--now-color--link-primary, #00718f); } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } Any Cause<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } span { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } h2 { font-size: 24pt; font-family: Lato; color: var(--now-color--text-primary, black); } h3 { font-size: 18pt; font-family: Lato; color: var(--now-color--text-primary, black); } h4 { font-size: 14pt; font-family: Lato; color: var(--now-color--text-primary, black); } a { font-size: 12pt; font-family: Lato; color: var(--now-color--link-primary, #00718F); } a:hover { font-size: 12pt; color: var(--now-color--link-primary, #024F69); } a:target { font-size: 12pt; color: var(--now-color--link-primary, #032D42); } a:visited { font-size: 12pt; color: var(--now-color--link-primary, #00718f); } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } Upgrades Resolution<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } span { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } h2 { font-size: 24pt; font-family: Lato; color: var(--now-color--text-primary, black); } h3 { font-size: 18pt; font-family: Lato; color: var(--now-color--text-primary, black); } h4 { font-size: 14pt; font-family: Lato; color: var(--now-color--text-primary, black); } a { font-size: 12pt; font-family: Lato; color: var(--now-color--link-primary, #00718F); } a:hover { font-size: 12pt; color: var(--now-color--link-primary, #024F69); } a:target { font-size: 12pt; color: var(--now-color--link-primary, #032D42); } a:visited { font-size: 12pt; color: var(--now-color--link-primary, #00718f); } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } Checklist to verify: Please Note: This is general checklist compiled based on troubleshooting and collections from various resources1. Instance has custom theme > check sys property > 'glide.ui.polaris.theme.custom', >revert to OOB 2. Check below sys properties:- check sys property : glide.ui.strict_content_types > then disable them.- check sys property : glide.polaris.sw_corejs.disable > then enable it.- check sys property : glide.uxf.msw.disabled > then enable it.- check sys property : glide.product.description > revert to OOB - check sys property : glide.uxf.nxui_engine_version > Type: String , Value: 18 3. Verify below code in background scripts and confirm it prints atleast 1 valid language gs.print("Lang = "+ gs.getSession().getLanguage());*** Script: Lang = en 4. Check user preferences 'glide.ui.polaris.use' and value should be true for System type 5. Check sys_polaris_menu_config_list for any customizations. 6. Try Disabling dark theme (if enabled in the instance) and cleared cache. 7. Try reparing sn-themes plugin 8. Check below UX Assets should match with OOB: checked UX Asset qs/6.11.0/index:https://<instance_name>.service-now.com/nav_to.do?uri=sys_ux_lib_asset.do?sys_id=a57bcfd3235bd6c15ebbc39de032a94a - checked UX Asset qs/6.11.0/indexApplication:: sn-canvas-corehttps://<instance_name>.service-now.com/nav_to.do?uri=sys_ux_lib_asset.do?sys_id=2cc136a5efb397fdb04327f0a68d6753 9. confirm if Polaris theme has no Core UI Styles:https://<instance_name>.service-now.com/nav_to.do?uri=sys_ux_theme.do?sys_id=31bf91ae07203010e03948f78ad30095 10. check below theme variables are missing and not loading completed variables as compare to OOB https://<instance_name>.service-now.com/polarisberg_theme_variables.do?c=1 11. Check glide.analytics.enabled and try to set it to false. 12. Try 'Repair' sn-theme plugin on the affected instance (with customer approval)https://<instance_name>.service-now.com/now/app-manager/home/plugin/id/com.sn_themes/details