If in bootstrap modal dialog change class definition it is not closed

Hello,
In laravel 5, jquery 3, bootstrap 4.4, blade app I use modal dialogs with methods like for opening :

…
$("#div_check_in_storage_space_modal").modal({
"backdrop": "static",
"keyboard": true,
"show": true
});
…

Code (JavaScript):

and closing

bookingsAndAvailability.prototype.cancelAddNewClient = […]

See original post by invalid@example.com (mstdmstd)