As for the client side (browser), Dynatrace data should be displayed properly as it takes TZ automatically from the user's browser.
Backend data are stored in UTC so metrics and baselines shouldn't be affected. Also depends on the aggregation level, you will probably even not see an empty chart bars.
Also fixed in 1.229 SaaS / 1.230 Managed (https://www.dynatrace.com/support/help/whats-new/release-notes/saas/sprint-229/) :
Problem detection and notifications
Hopefully this can be resolved. I am a DT advocate here, and it is a little awkward to explain that as smart as Davis is, it doesn't understand tzones. I then heard a quip from a senior manager calling it "ED-209". Probably only boomers would understand that one 😆