Please let me clarify all questions that may have arise.
This change was implemented in order to preserve existing balance. For further explanation let me draw your attention to the fact that all raid attempts, including bonus attempts for Obelisk of Power, House of Unity and Paragon Status, are recovered in 24 hours. So initially you have 10 raid attempts per day and each of them is recovered once in 2 hours 24 minutes. Thus, the time of recovering raid attempts depends on your current maximum amount of raid attempts. So if your Paragon Status is activated, you can have 14 raids maximum and each attempt is recovered once in 1 hour 43 minutes.
To sum up, if you have the absolute maximum amount of raid attempts, which is 20, each raid is recovered once in 1 hour 12 minutes. Yes, you don't get all 4 bonus raid attempts at once, but now all of them are recovered much faster!