FPC for unrelated products being cleared after editing a single product

[gibbotronic]

Preconditions (*)

1. Magento 2.3.3 & 2.3-develop

Steps to reproduce (*)

0. Load the demo store

1. Ensure that demo store is set to use FPC (Store > Config > System > Cahce > Full Page Cache

2. Load some product pages on the front end eg in Chrome. (Use the network tab in the browser inspector to note load time - TTFB should be ~700+ms ish)

3. Reload all pages. TTFB should be reduced to ~150ms ish as the pages have been cached.
   

4. Edit an unrelated product on the back of the site (not present in any related products etc).
   e.g.You can move product from first category to second

5. Reload all front end pages one at a time. Note that the TTFB has now gone back up to ~700+ms indicating a clearing of cache, even though the only modified item was an unrelated product.
   Note: This also applies to home page, categories etc.
   

Expected result (*)

1. The FPC should not be cleared for unrelated products.

Actual result (*)

1. The cache is getting cleared as indicated by the increase in TTFB.

[m2-assistant]

Hi @gibbotronic. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.3-develop instance - upcoming 2.3.x release

For more details, please, review the Magento Contributor Assistant documentation.

@gibbotronic do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

---

• Join Magento Community Engineering Slack and ask your questions in #github channel.

[gibbotronic]

@magento give me 2.3-develop instance

[magento-engcom-team]

Hi @gibbotronic. Thank you for your request. I'm working on Magento 2.3-develop instance for you

[magento-engcom-team]

Hi @gibbotronic, here is your Magento instance.
Admin access: https://i-25670-2-3-develop.instances.magento-community.engineering/admin
Login: admin Password: 123123q
Instance will be terminated in up to 3 hours.

[gibbotronic]

There is no data on that instance. I have tried adding 2 products and editing one but there are no indexers running on that instance and I have no way of forcing the indexers to run, so it is not a suitable test scenario for the bug.

Due to the this I cannot fully confirm on that instance, so I am marking this bug as “reproducible” on vanilla 2.3.3.

@gibbotronic do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

yes <---------- YES

[m2-assistant]

Hi @engcom-Charlie. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).

  Details

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• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue. If the report is valid, add Issue: Clear Description label to the issue by yourself.

• 3. Add Component: XXXXX label(s) to the ticket, indicating the components it may be related to.

• 4. Verify that the issue is reproducible on 2.3-develop branch

  Details

  - Add the comment @magento give me 2.3-develop instance to deploy test instance on Magento infrastructure.
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[magento-engcom-team]

✅ Confirmed by @engcom-Charlie
Thank you for verifying the issue. Based on the provided information internal tickets MC-29069 were created

Issue Available: @engcom-Charlie, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.