DB Instance: can't ignore changes to 'diskSize' - blocks all updates to DB instance with diskAutoresize: true

Cloud SQL (PostgreSQL) instance created with diskAutoresize: true and empty diskSize will fail to update if autoresize has increased storage size beyond the default 10 GB, even if ignoreChanges: [ "diskSize" ] :

Error, failed to update instance settings for : googleapi: Error 400: Invalid request: The disk size cannot decrease. Current size: 37 GB, requested: 10 GB.., invalid

pulumi v2.23.1
pulumi-gcp 4.15.0

Expected behavior

ignoreChanges allows to ignore a change to diskSize that got increased by GCP because of diskAutoresize: true

Current behavior

ignoreChanges: [ "diskSize" ] doesn’t cause diskSize changes to be ignored

Steps to reproduce

1. Create db instance with empty diskSize (will default to 10), diskAutoresize: true and ignoreChanges: [ "diskSize" ]
2. Insert enough data into db to cause autoresize to increase db disk size over the default 10 GB
3. Change any configuration value for that db instance and try to apply it

[sbjorn]

Passing ignore_changes=['settings.diskSize'] works well on my end. (Definitions written in python)

[gunar]

Same problem here. As @thomas-gallop mentioned, using --refresh fixes this.