Why does font visually change when switching tabs in multi-tab mode?

When switching between tabs in multi-tab mode, you will sometimes notice that fonts set for free-text annotation will have their font family switched.

This occurs because the multi-tab feature exports annotations to XFDF and then re-imports them when switching tabs. During this process, the core engine may substitute fonts if exact matching is not enforced, which can cause the text to render with a different font, such as Arial instead of Arimo.

To resolve this, enable strict font matching to prevent fallback substitution during XFDF import:

instance.Core.enableStrictAnnotationFontMatching(annotationManager);

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