If you select 1000 or more plain formatted paragraphs you can apply a font style
such as Bold, Italic or Underlined to them via toolbar or keyboard shortcuts but
you can't then revert the formatting via toolbar or keyboard shortcuts.

1. Create a text with 1000 or more paragraphs (I will shortly attach a sample).
2. Select all.
3. Apply Bold via toolbar. All paragraphs are typeset in Bold now.
4. Click again on the Bold icon in the toolbar.

Expected:
5. Bold formatting is removed.

Actual:
5. OOo does not recognize the text as Bold (it succeeds with 999 paragraphs, but
not with 1000 or more); the button for Bold isn't highlighted as it should, but
no explicit warnings are shown; clicking on the Bold icon results in applying
Bold again.

At the very least, OOo should warn that the selected text size exceeds a limit,
or the limit should be documented somewhere; toolbar icons could be greyed out
when the text exceeds OOo capacity.

I reckon this is a bug and not a feature request: if I receive a text with 1001
bold paragraphs and want to set a plain style, I cannot go through the usual
keyboard shortcuts or the toolbar, and I'm forced to go through the Format ->
Character dialog. Nothing in the documentation warns about these limitations of
toolbar/keyboard commands.

[Reported by Andrea on the Italian mailing list]