Side cart not updating

Hi FunnelKit Support,

We are using FunnelKit Cart on a bespoke WooCommerce theme with custom AJAX add-to-basket functionality.

The issue we are seeing is:

• Products are successfully added to the WooCommerce cart
• The basket page always shows the correct contents
• The FunnelKit mini cart / side cart does not stay updated after AJAX add-to-basket
• The cart count or totals may briefly update correctly, but then the mini cart appears to revert back to stale data before it can even be opened
• Refreshing the page or visiting the basket page immediately corrects the mini cart contents

Important findings:

• WooCommerce itself appears to be working correctly
• Our AJAX response already includes FunnelKit fragments such as:
  .fkcart-modal-container
.fkcart-mini-toggler
fkcart_qty
fkcart_total
• We have tested triggering:
  added_to_cart
wc_fragment_refresh
• We have excluded WooCommerce and FunnelKit cookies/URLs from WP Rocket cache
• We have tested with cache exclusions and cache clears
• The issue still occurs even though the correct cart values briefly appear first

This support thread appears to describe a very similar issue:
https://wordpress.org/support/topic/funnelkit-cart-menu-count-and-sidecart-not-updating/

Could you please advise:

1. Whether this is a known FunnelKit fragment/local storage/cart refresh issue
2. Whether there is a recommended method for refreshing FunnelKit Cart after a custom AJAX add-to-cart request
3. Whether there is an updated plugin build or patch available related to this issue

Thanks,
Alex