[Bug report] Pickadate not loaded when using kiosk with chromium

[r-xyz]

The date and time picker (when creating reservations in kiosks) are not working anymore in recent versions of chromium.

Steps to reproduce

1. Open kiosk page using Chromium
2. Select a tool, make new reservation
3. Click on date/time fields: nothing happens

Notes

This seem to only affect datetime pickers; Keyboard and numeric input keypad work as expected in kiosks.
Everything works correctly in Firefox, but a similar warning is shown in console, too (see below).

Logs

Chromium console logs

[Violation] Permissions policy violation: Synchronous requests are disabled by permissions policy. [3 times]
  send @ jquery.min.32015dd42e95.js:4
  ajax @ jquery.min.32015dd42e95.js:4
  n._evalUrl @ jquery.min.32015dd42e95.js:4
  domManip @ jquery.min.32015dd42e95.js:3
  append @ jquery.min.32015dd42e95.js:3
  (anonymous) @ jquery.min.32015dd42e95.js:3
  n.access @ jquery.min.32015dd42e95.js:2
  html @ jquery.min.32015dd42e95.js:3
  load_complete @ Cleanroom/:166
  j @ jquery.min.32015dd42e95.js:2
  fireWith @ jquery.min.32015dd42e95.js:2
  x @ jquery.min.32015dd42e95.js:4
  (anonymous) @ jquery.min.32015dd42e95.js:4
  load
  send @ jquery.min.32015dd42e95.js:4
  ajax @ jquery.min.32015dd42e95.js:4
  ajax_message @ nemo.b6574a18bcce.js:503
  ajax_post @ nemo.b6574a18bcce.js:492
  tool_report_problem @ Cleanroom/:243
  onclick @ Cleanroom/:1

Uncaught TypeError: $(...).pickadate is not a function
    at eval (eval at globalEval (jquery.min.32015dd42e95.js:2:2538), <anonymous>:5:50)
    at eval (<anonymous>)
    at Function.globalEval (jquery.min.32015dd42e95.js:2:2538)
    at n.domManip (jquery.min.32015dd42e95.js:3:17203)
    at n.append (jquery.min.32015dd42e95.js:3:14886)
    at n.<anonymous> (jquery.min.32015dd42e95.js:3:16246)
    at n.access (jquery.min.32015dd42e95.js:2:30124)
    at n.html (jquery.min.32015dd42e95.js:3:15917)
    at Object.load_complete (Cleanroom/:166:32)
    at j (jquery.min.32015dd42e95.js:2:26911)
  eval @ VM223:5
  globalEval @ jquery.min.32015dd42e95.js:2
  domManip @ jquery.min.32015dd42e95.js:3
  append @ jquery.min.32015dd42e95.js:3
  (anonymous) @ jquery.min.32015dd42e95.js:3
  n.access @ jquery.min.32015dd42e95.js:2
  html @ jquery.min.32015dd42e95.js:3
  load_complete @ Cleanroom/:166
  j @ jquery.min.32015dd42e95.js:2
  fireWith @ jquery.min.32015dd42e95.js:2
  x @ jquery.min.32015dd42e95.js:4
  (anonymous) @ jquery.min.32015dd42e95.js:4
  load
  send @ jquery.min.32015dd42e95.js:4 
  ajax @ jquery.min.32015dd42e95.js:4
  ajax_message @ nemo.b6574a18bcce.js:503
  ajax_post @ nemo.b6574a18bcce.js:492
  tool_report_problem @ Cleanroom/:243
  onclick @ Cleanroom/:1

Chromium issue log:

Deprecated feature used:
  Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
Affected resources:
  jquery.min.32015dd42e95.js:4

Firefox Console log:

Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help https://xhr.spec.whatwg.org/#sync-warning                     [jquery.min.32015dd42e95.js:4:14161](http://localhost:8000/static/jquery.min.32015dd42e95.js)

[r-xyz]

https://xhr.spec.whatwg.org/#sync-warning