Yes. The app is like Twitter meets a wiki. The Log Entries are limited to 2500 characters (about 300-400 words).
The initial idea was that Log entries with a 400 word limit, like how Twitter works, would help GMs prep faster by being succinct.
Longer entries also messes with the purpose of tags. Tags embedded in 2000 word essays get lost and lose their value.
However, lots of excellent user feedback has poured in about the character limit. So in the upcoming Campaigning update in development by
@JochenL we're creating "Core Log Entries" with much larger character counts. You'll be able to use these core entries for canon and longer write-up treatments.
Then you can use the standard Log Entries for faster session logging, ideation, and campaign updates.