Matt

72000c9768e33763149f2c6dd872e035b0fc41b5 Creates an empty class with a name you provide. The assumption is you can then edit it however you prefer _(recompile vs assembler)_

Please provide a sample & mappings file that reproduces the issue

I assume this is an artifact of not providing the appropriate intermediate jar to the workspace. You can now bypass this with the steps outlined here with the new `Mapping...

Opens fine for me  Default IO/ZIP parse settings 

With your modified one: Recaf can understand what files there are in the zip if you use the `Naive` strategy, but because the file entries are all sized at ZERO...

f18c86d96b584fe4fe82efd5df21497cee2a1b8a - Forgot to close this when I added it.

Your issue description says 4.X but the video shows 2.X This is a known bug with JavaFX on some desktop environments. I've not tried reproducing on 4.X but it uses...

For fastutil, these are the classes we and transitive dependencies import. ``` it.unimi.dsi.fastutil.Hash.Strategy; it.unimi.dsi.fastutil.bytes.ByteIterator; it.unimi.dsi.fastutil.chars.Char2IntArrayMap; it.unimi.dsi.fastutil.chars.Char2IntMap; it.unimi.dsi.fastutil.chars.Char2ObjectArrayMap; it.unimi.dsi.fastutil.chars.Char2ObjectMap; it.unimi.dsi.fastutil.chars.CharArraySet; it.unimi.dsi.fastutil.chars.CharSet; it.unimi.dsi.fastutil.ints.Int2IntArrayMap; it.unimi.dsi.fastutil.ints.Int2IntLinkedOpenHashMap; it.unimi.dsi.fastutil.ints.Int2IntMap; it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap; it.unimi.dsi.fastutil.ints.Int2IntSortedMap; it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap; it.unimi.dsi.fastutil.ints.Int2ObjectArrayMap; it.unimi.dsi.fastutil.ints.Int2ObjectMap.Entry; it.unimi.dsi.fastutil.ints.Int2ObjectMap; it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;...

Does this happen consistently with the APK you're trying to open?

Can you provide the exact files that are causing this issue? I cannot find any APK files that result in a crash on my end.