Connector conflict with Advanced Search
                    The import of the PDF file of an article fails when the advanced search is selected in Zotero.
Steps to reproduce:
1) Open the Advanced Search, make a search and select one of the results of the search.
2) Import an article from the connector in the browser.
→ The metadata is imported to the library, but the PDF file fails to import:
https://s3.amazonaws.com/zotero.org/images/forums/u265723/xoq72y1kjidz2fq69a0o.png
Tested on: https://www.mdpi.com/2079-6412/12/12/1990
Zotero Connector 5.0.186beta1
The Debug ID is D1580136266.
Zotero 8.0-beta.13+d1f478fc4 (64-bit)
The Debug ID is D1696674399.
The same import works fine after closing the Advanced Search window:
Zotero Connector: The Debug ID is D511114734.
Zotero: The Debug ID is D1351992470.
                            Steps to reproduce:
1) Open the Advanced Search, make a search and select one of the results of the search.
2) Import an article from the connector in the browser.
→ The metadata is imported to the library, but the PDF file fails to import:
https://s3.amazonaws.com/zotero.org/images/forums/u265723/xoq72y1kjidz2fq69a0o.png
Tested on: https://www.mdpi.com/2079-6412/12/12/1990
Zotero Connector 5.0.186beta1
The Debug ID is D1580136266.
Zotero 8.0-beta.13+d1f478fc4 (64-bit)
The Debug ID is D1696674399.
The same import works fine after closing the Advanced Search window:
Zotero Connector: The Debug ID is D511114734.
Zotero: The Debug ID is D1351992470.
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