Upgrade to the MacOS 26 Tahoe (latest public beta) broke the fonts in most of the existing diagrams.
Lucid’s example flowchart code:
graph LR
A;Square Rect] -- Link text --> B((Circle))
A --> C(Round Rect)
B --> D{Rhombus}
C --> D
See attached screenshot for the issue.
Same issue for the all diagram examples.
Hi
Thanks for bringing this to our attention and for sharing the screenshot. Since you are on the MacOS 26 Tahoe beta, the issue you are seeing with fonts is likely related to compatibility changes introduced in that beta.
In the meantime, you can try a few troubleshooting steps:
Open Lucid in a different browser (Chrome, Firefox, or Safari)
Try an incognito or private browsing session
Clear your cache and cookies
If the issue still persists, it is most likely tied to the beta itself. For the best experience, we recommend working in a stable MacOS release until Tahoe is finalized.
You may also find these articles helpful:
System requirements for optimized Lucid performance
Troubleshooting performance and live collaboration
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