Latency or delay behavior in QuickBooks Online (QBO) can sometimes be the cause of a browser issue. To fix this, we can perform some basic browser troubleshooting steps.
Let's start by using a private browser or incognito when accessing your account. Since this type of browser doesn't store data in the cache, this makes it the best place for isolating browser issues.
You can refer to the following keyboard shortcuts below:
Google Chrome: Ctrl + Shift + N
Microsoft Edge: Ctrl + Shift + P
Firefox: Ctrl + Shift + P
Safari: Command + Shift + N
Then, try searching or creating an inventory item again. If everything works fine, you can go back to regular browsing then clear the cache to refresh the system. Otherwise, you can try using other supported browsers to be thorough.