My group recently migrated from classic to New Google Sites. There were many things I was doing with classic sites and/or apps script's Sites Service I can't do
pod-install
data-wrangling
include-guards
leaf
debug-information
arduino-uno
graphicimage
deedle
forms
podfile-lock
laravel-excel
multiple-mice
mage
luminance
nanopi
securefield
crash
truss
oltp
vscode-remote
fxml
huobi
oracle-fusion-apps
kobotoolbox
error-checking
teradata
ankhsvn
lightningchart
openglcontext
ciimage