Unable to save Dropdown Product Attribute Value that contains an " & "

[jfahrni]

After the last update, some of our Product-Attribute Values are suddenly strangely truncated. We can reproduce this behavior with a fresh Magento 2.2.6 installation: if a value contains an " & " it will be cut at this point (when saving) and only the first part will remain as value.

Preconditions (*)

1. Fresh installation via Composer
2. Magento 2.2.6 CE

Steps to reproduce (*)

1. Go to Stores => Attributes => Product
2. Add New Attribute
3. "Catalog Input Type for Store Owner" => Dropdown
4. Add Option: String that contains an & (Example: "Dolce & Cabana")
5. Save (or Save and Continue Edit)

Expected result (*)

1. The value (Value of your Option) is saved as entered

Actual result (*)

1. Only the part bevor the & remains as Value of this Option

[magento-engcom-team]

Hi @jfahrni. 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-engcom-team give me $VERSION instance

where $VERSION is version tags (starting from 2.2.0+) or develop branches (for example: 2.3-develop).
For more details, please, review the Magento Contributor Assistant documentation.

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

• yes
• no

[hostep]

Let's close this one as it duplicates #18263, thanks for the report though @jfahrni!
It looks like Magento is already fixing it internally based on this comment.