WooCommerce connector: 75% of entries are for mysterious "tax rate updated" events

[ChrisHardie]

Bug Report

In a high-traffic WooCommerce site, we noted that 75% of all Stream entries (many thousands of them) are for the event "1" tax rate updated, often many being logged within a few seconds or minutes of each other. The object_ids referenced appear to be various related entries in wp_woocommerce_tax_rates. Slightly over 50% of those entries are for user_id 0 while the remaining entries seem to be logged around the time when a user places an order.

There's some indication in https://github.com/woocommerce/woocommerce/issues/30365 that there's an open bug around tax update events in WC being called for orders unexpectedly or unnecessarily, but I haven't found other reports of this from other Stream users, and it's hard to say if that would be causing this specific issue.

I believe the related function call is happening at https://github.com/xwp/stream/blob/develop/connectors/class-connector-woocommerce.php#L621.

Any troubleshooting advice would be welcome. We're wondering if we should just use the wp_stream_log_data filter to avoid logging these events, or if there is a better/longer-term fix that should be pursued to benefit others too. Thank you.

Screenshots

System Information

• Stream plugin version: 3.8.2
• WordPress version: 5.9.3
• PHP version: 7.4.28
• Browser: all
• Computer operating system: all