My all day calendar entries are showing up on other platforms as 10am the day before, carrying over into 10am the correct day.
Mark has reported a number of bugfixes relating to the export of all day events. The interpretation of time zone information in the ICS format used may be inconsistent. This one in particular sounds similar to your issue:
In any case, bug reports go to email@example.com, in GMF we can only offer advice and shared experience.
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