Text cycle-content makes text disappear

When using input type content, with the container div.cycle-content with a story node like this:

<div class="content">
<div class="cycle-content">
<spacer vertical="60"
</spacer>
one one one one one one
</div>

<div class="cycle-content">
<spacer vertical="60"
</spacer>
two two two two two two
</div>

<div class="cycle-content">
<spacer vertical="60"
</spacer>
thr thr thr thr thr thr
</div>

<div class="cycle-content">
<spacer vertical="60"
</spacer>
fou fou fou fou fou fou
</div>

<div class="cycle-content">
<spacer vertical="60"
</spacer>
fiv fiv fiv fiv fiv fiv
</div>

<div class="cycle-content">
<spacer vertical="60"
</spacer>
six six six six six six
</div>

</div>

displayed as a block, the last cycle content "six six ..." does not appear anymore, just an empty block is displayed until it restarts with "one one ..."

If more text is added to the fields, the number of contents cycled through goes down and the last one is always empty.

Is there an array that limits the number of characters?