“Disable Dates” button in Room Management does nothing – is this a bug?

[bluemoon288]

In QloApps 1.7, under Catalog → Manage Room Types → Rooms, the “Disable Dates” button (for adding block dates to a room) has no function.
When I click it, nothing happens — no popup, no form, no error. Other buttons work normally. Test with Chrome and Edge.
In the official training video this feature is shown as functional, so I’m wondering if this is a bug in the current version or if something has changed.
I can attach a screenshot if needed.
Thanks in advance!