https://supportcenter.devexpress.com/ticket/details/t734177/accordionitem-stays-highlighted-after-closing-a-modal-window-when-selectionmode-is-set
AccordionItem stays highlighted after closing a modal window when SelectionMode is set to None |...
Apr 19, 2019 - [DevExpress Support Team: CLONED FROM T733790: AccordionItem - Clear Highlighting]
https://supportcenter.devexpress.com/ticket/details/t548164/how-to-change-accordionitem-header-background-color-globaly
How to change AccordionItem Header background color globaly. | DevExpress Support
how to changeheader background coloraccordionitemdevexpresssupport
https://ru.docs.webix.com/api__link__ui.accordionitem_hide.html
hide of ui.accordionitem, Methods Webix Docs
Webix Documentation: Methods of ui.accordionitem. This page contains hide documentation to help in learning the library.
hideuiaccordionitemmethodswebix