Range slider doesn't allow user input on desktop

We have been using Framework7 on Vue over HTTP with no problems for 2 years now. Recently some new customers are complaining that they cannot move the range sliders on their Windows 10 PCs:

  • When viewed on a problematic Windows 10 PC, the <f7-range> sliders can be moved programmatically, but not by the user.
  • When viewed on a problematic Windows 10 PC, standard HTML range sliders work just fine, but <f7-range> does not.
  • When viewed on a problematic Windows 10 PC with either Edge, Chrome or Firefox, the problem persists.
  • When viewed from another PC or the customer’s mobile phone, there are no issues.

Does anyone have a suggestion on how to troubleshoot this issue?

So far I have:

  • Tried disabling the antivirus (Bullguard), with no effect,
  • Looking for errors in the Chrome dev console (nothing).