As per title. How to replicate - go to test drive and literally drop it on top of a tank.
Tested with A-4E early and i have the same issue.
You can bug report it here: Gaijin.net // Issues (just search a bit first so that you don’t report something that is already reported and known about)
A guide on how to report bugs can be found here: ([Navigation] Technical Knowledge Base | War Thunder Wiki)
It could just be a test drive bug, walleyes were fine yesterday in real matches
They don’t work in real matches either. But I have found a workaround.
A direct hit in Test Drive is a useful starting point, but the report still needs the exact Walleye variant, aircraft, target and impact location. Different vehicles and external modules can produce very different blast/fragment results, and the client animation alone cannot show whether damage was calculated server-side.
Repeat the test several times against the same stationary target, then compare a roof hit, ground impact beside the hull and direct impact on an external module. Record the explosive mass shown on the weapon card and the current client version. If all comparable hits produce no damage, attach a short video, client replay and .clog to a minimal bug report. It would also help to test one conventional bomb of similar explosive mass under the same geometry; that comparison can show whether the regression is specific to Walleye damage handling rather than the target or general blast model.