(This task is for Special:CheckUser and a similar one for Special:InvestigateBlock exists at T313450)
Feature summary (what you would like to be able to do and where):
When using Special:CheckUser's block form on the 'get users' results for both IPs and accounts the blocks on IPs should be actually performed some time after or logged later in a method to be determined so that non-CUs looking at the block log for a CU cannot connect them based on the similar timestamp for blocking.
Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):
When blocking IPs and accounts the blocks for IPs should be separated out from the blocks on the accounts so that non-CUs reviewing the block log of a CU cannot use that the accounts and IPs were blocked at the same time to correlate that the IPs and accounts were from the same results and thus related.
Benefits (why should this be implemented?):
This would help make using Special:CheckUser's 'get users' block form for both IPs and accounts better as it would not make the link between the IPs and accounts as easy to view.
Things to discuss
The method to do this needs to be discussed as this will likely mean the block on the IPs being delayed in some manner, which for active abuse could be counterproductive.