With the “preheating” of apps, Apple has actually wanted to accelerate the start of frequently used applications since iOS 15. But developers are currently struggling with a persistent login problem, the solution of which is turning out to be very complex.
With iOS 15, Apple has integrated a process that preloads apps in the background without the user having any influence. During operation, the operating system constantly tries to anticipate which applications will be started next. But this is exactly where a problem arises that gives developers headaches. Users are repeatedly logged out of the “preheated” apps and have to log in again when they start. Apple does provide instructions for the necessary adjustments, but they seem incomplete.
As the developer of the Cookpad app describes in a detailed blog post, the login problem was a bit surprised because it did not occur during the test with the corresponding beta. Another problem: since the “preheating” process is individually tailored to user behavior, it is very difficult to reliably reproduce the error.
According to the developer, Apple provides “well-written documentation” here, but the process apparently deviates from these descriptions under certain circumstances: “It was quite difficult to fix this error, and the fact that the deviations in behavior are completely undocumented seems didn’t really help me. “
In order to enable the automatic login even with “preheated” apps, developers have to optimize the start process accordingly. According to Cookpad, the focus is on the appropriate reading of the access token from the system-wide keyring. iOS 15 brings with it an increased chance for developers that “protected data is not available if you assume that it should be.”
There are currently increasing reports from app developers who provide or plan updates for their applications. On the user side, however, it simply means: Wait until the applications concerned are brought up to date.
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