A fellow developer shared a Weibo post (https://weibo.com/1808884742/IApbpEVQr) where blogger @王波粒 noticed a peculiar phenomenon on the Mate 30 Pro. I highly recommend watching the video first.

The question concerns a difference observed in 2020: some Huawei samples displayed feed images during scrolling, while some other samples waited until the list stopped. This is not a claim about every current device; configuration, caches, and system behavior can differ even with the same client version.

The same version of Weibo behaving differently on different phones was something I wanted to understand as a system performance engineer. Had Weibo made a specific adaptation? What had changed? Let’s look at the code and see what we can learn.