Some visual labels and field labels are not rendering correctly on FIRST load.

Issue: Some visual labels and field labels are not rendering correctly on FIRST load.
Scope: Power BI Embedded. From our application, when the user opens BI, Power BI content opens in the user's default browser. This issue is not specific to any browser; issue occurs in Chrome, Edge and Firefox.
When reports are first opened in the browser, some of the visual labels are misaligned and some field labels are missing completely. Visuals affected are cards, multi-row cards, chicklets, tables and matrix tables.
This issue did not start recently. It has been intermittent for a few years, though as our report content grows, is more evident.
NOTE: When reports are opened in the Power BI service, they render PERFECTLY. This issue is only prevalent when EMBEDDED.
When the user right-clicks and selects reload, the reports reload and the issue is resolved; the user can "fix" the issue by reloading the reports.
We have updated the PowerBI Javascript Client, triggering an auto-reload (so that the user would not have to) and disabling cache. We have not been able to resolve the issue and we hope you can offer some guidance.