+1 for this failing on 204.2. An upgrade to 204.2 today gives an unknown error saving to OneDrive. Happens on multiple machines running the latest Chrome.
Rolling back to 197.2 allows it to save again.
Console errors:
sandbox.js:1 PUT https://graph.microsoft.com/v1.0/me/drive/items/366AA09824F980D6!11145:/PT%20Keys%201.7.8d.c3p:/content?@microsoft.graph.conflictBehavior=replace net::ERR_FAILED
(anonymous) sandbox.js:1
request sandbox.js:1
(anonymous) sandbox.js:1
async function (async)
(anonymous) sandbox.js:1
t sandbox.js:1
ǃera sandbox.js:1
(anonymous) sandbox.js:1
main.js:210 Error saving: {response: "", code: 0, status: "", message: ""}