Probable BUG after update to Joomla 4.3.0

I inserted texts in the 6 slides before the update and they all appeared regularly. Only after a few days, after updating to Joomla 4.3.0, I realized that the text of the first slide had disappeared, despite being present in the module.
Looking carefully, I see that the missing text appeared in an underlay, as a ghost, on the last slide.
I send you screenshots.
To view the problem, this is the link: www.promomarble.it
Greetings

Hi
I see that your code is compressed, please try to remove the compression and caches, clear all and tell me so that we can check
CEd

PS : I have joomla 4.3.0 and it works, so I don't think that this is the problem

I disabled the Jspeed plugin, first I cleared the plugin and then the system cache. I saw that everything is back to normal. I re-enabled the Jspeed plugin and there are no compression issues. Maybe something happened when upgrading to a new version or something.
No matter home it happened, clearing Jspeed's cache fixes it.

Thank you