Console Error When Configuring Product Add-ons with WooCommerce Automated Taxes Enabled

[daniyalahmadk]

Bug Report

Describe the bug
When WooCommerce Shipping and Tax is activated with "Automated tax" enabled, configuring product addons during manual order creation throws a JavaScript error in the console.

Console Error

Uncaught TypeError: r.data.indexOf is not a function  
File: woocommerce-services-new-order-taxjar-2.8.2.js  
Line: if (r.data && r.data.indexOf("woocommerce_calc_line_taxes") > 0)

To Reproduce
Steps to reproduce the behavior:

1. Install WooCommerce Product Add-ons and configure a global addon.
2. Go to WooCommerce > Settings > Tax and enable "Automated taxes."
3. Go to WooCommerce > Orders > Add New, add a line item, then click on the "Configure" button.
4. Fill in the addon field in the popup, click "Done," and observe the console error.

Expected behavior
The product addon should be configured without errors, and the order process should continue without getting stuck on the loading icon.

Screenshots

Full Size: https://d.pr/i/RAW1tf

[grig-23]

8898937-zen - I think this is where this was originally reported.

[rbgly]

9066631-zen