This is a bug, and was suggested to be logged here by Anonymous from this forum post: https://community.powerbi.com/t5/Service/Text-not-updating-in-dashboard-tile/m-p/139425#U139425 Details a...
v-qiuyu-msft
Community Support
Community SupportHi CMcAlpine,
The same issue already reported internally: CRI 32562650. PG are working on addressing this ASAP. I will update to you once I get the feedback.
Best Regards,
Qiuyun Yu