p-calendar and p-datepicker opens unexpectedly when you navigate to another tab in the browser and come back

[swarajtotey]

When implementing p-calendar, I found that when you select a date from the calendar, the focus does not disable like it used to in previous versions. So, on choosing the date, navigate to another tab (already opened) in the browser and then come back to the same tab, you will see the calender unexpectedly opens. Its pretty consistent.
I thought maybe this was an issue with v17 but this issue also persists in v20 with datepicker.
The same issue is not reproducible in v16.

Has anyone faced this same issue?
I saw a ticket was logged for this, but it was closed since they were unable to reproduce it. primefaces/primeng#16213

Steps to reproduce,

1. Navigate to, https://v17.primeng.org/calendar or https://primeng.org/datepicker
2. In one of the calendar demos, select a date.
3. Navigate to another opened tab
4. Navigate back to the tab with the calendar demo
5. You should see the calendar opened unexpectedly.

Is there any solution for this?

[zakharenkov]

Reproduced in version 21 directly here.

The "Button Bar" section displays two calendars side by side.
This issue is especially noticeable when multiple calendars are open.
Select a date in one calendar to close the pop-up window.
Click on the taskbar or in another window.
Click on the second calendar.
Voila, you have two calendars open at once.