Software flow acceleration sometimes works stably, sometimes it freezes after a reboot

Hostname	OpenWrt
Model	Xiaomi Mi Router 4A Gigabit Edition
Architecture	MediaTek MT7621 ver:1 eco:3
Target Platform	ramips/mt7621
Firmware Version	OpenWrt 25.12.2 r32802-f505120278 / LuCI openwrt-25.12 branch 26.120.35050~a611522
Kernel Version	6.12.74

I just noticed this problem and it's extremely annoying. What can I do?

Restarting the firewall fixes the problem.

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