Thank you! Impressive work! I really appreciate you catching this. I think this bug has been causing problems and it didn't know why.

Do you happen to know what values were being passed to new GeoExtent(oldExtentOfInnerTileInRasterCRS.bbox); leading to NaN? Is there a bug in the geo-extent library that I should fix?

Yes, I took a screenshot of the variables :
CleanShot 2022年07月25日 at 10 20 11@2x

I think the problem is indeed with the subtract operation in geo-extent (https://github.com/DanielJDufour/geo-extent/blob/2ede7c76866e9fd78a426fb1b0463692c1564078/src/geo-extent.js#L159)

wow. I really appreciate you finding the root cause of the problem! I created an issue with preciso and will fix there: DanielJDufour/preciso#7

I think the issue might have been geo-extent using an old broken version of preciso. Will republish soon

Rebuilding / Republishing hit a snag with some dependency typings. I can fix it, but it will unfortunately probably take a day or more.

No problem for the timeline :)

Since the error is from an external dependency, do you prefer I remove the commit that checks if it's different than 0 or is it ok for you as-is ?

I just published version 3.9.0-0 as a release candidate, which should fix the previous issue. I'm going to read through this PR again and I'll think about your question more.