Comment 3 for bug 1574052

One workaround that worked for me was to manually download the titlesec package from CTAN: https://www.ctan.org/pkg/titlesec?lang=en.

Then, either change the \usepackage to point to where you placed the new titlesec.sty, or just unpack the entire package right next to the tex file. It should overwrite the default system titlesec package.