188BET靠谱吗[Zotero 7 Beta] Stolen focus after quickly switching tab

mjthoraval

In some conditions, the keyboard navigation between pages is not working after switching to a PDF tab.

Steps to reproduce:
1) Select an item with a PDF file in the main library and double click to open the PDF file in the Reader
2) During the loading of the PDF file (before the content of the PDF file appears), click on the "My Library" tab
3) Wait until the loading finishes in the background and go back to the PDF Reader tab that has just been opened by clicking on the tab
4) Press the "Right arrow" key on the keyboard
-> Nothing happens
5) Click again on the tab
6) Press the "Right arrow" key on the keyboard
-> It switches to another tab

188BET靠谱吗https://s3.amazonaws.com/zotero.org/images/forums/u265723/ojbqzivwcwmcu320opbc.png

I get the following error at step 4:

188BET靠谱吗[JavaScript Error: "group is null" {file: "resource://zotero/reader/reader.js" line: 43094}]

Debug ID: D2126561730
188BET靠谱吗Zotero 7.0.0-beta.90+f829d7c43 (64-bit)
Windows 10

It seems to be a small left-over from this previous bug:
188BET靠谱吗https://forums.zotero.org/discussion/114088/zotero-7-beta-ctrl-f-in-the-pdf-after-switching-tab