The developers are working hard on a new release and we expect to have it out shortly. You can check out the progress in our WordPress 5.5 updates pull request on GitHub.
Hi Martin-
I just wanted to update you that W3 Total Cache 0.14.3 has been released to resolve these issues. Please let us know if you spot anything else after you upgrade.
Great job on the update. Those errors aren’t showing up in the console anymore. I don’t seem to be seeing anything related to W3-Total-Cache in regards to deprecated jQuery.