Self-hosted instance doesn't render on Safari when prevent cross-site tracking enabled

[muratgozel]

When "prevent cross-site tracking" enabled on Safari, some styling and interactivity gets broken. No errors but warnings in the console logs. When I disable "prevent cross-site tracking", it renders just fine.

Tested with Safari 26.2

It might be Safari being overly aggressive with ES module importmaps.

Console logs for reference:

[Warning] The resource https://kanban.mydomain.com/assets/stimulus.min-4b1e420e.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing.
[Warning] The resource https://kanban.mydomain.com/assets/stimulus-loading-1fc53fe7.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing.
[Warning] The resource https://kanban.mydomain.com/assets/@rails--request-008569f9.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing.
[Warning] The resource https://kanban.mydomain.com/assets/marked-5b8cc3cc.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing.
[Warning] The resource https://kanban.mydomain.com/assets/activestorage.esm-81bb34bc.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing.
[Warning] The resource https://kanban.mydomain.com/assets/controllers/application-3affb389.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing.
[Warning] The resource https://kanban.mydomain.com/assets/controllers/assignment_limit_controller-0c789c17.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing.
[Warning] The resource https://kanban.mydomain.com/assets/controllers/auto_click_controller-c4b0f4b0.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing.