Go to definition in decompiled files silently crashes server

[fwcd]

System: macOS 10.13.5

When attempting to open a definition that is located in a *.class file, the server crashes silently and is unable to handle any requests, even though the file was successfully decompiled.

Log just before the crash:

[INFO]      async       main    Found declaration descriptor public open fun <U : (kotlin.Any..kotlin.Any?)> supplyAsync(p0: (java.util.function.Supplier<(U..U?)>..java.util.function.Supplier<(U..U?)>?), p1: (java.util.concurrent.Executor..java.util.concurrent.Executor?)): (java.util.concurrent.CompletableFuture<(U..U?)>..java.util.concurrent.CompletableFuture<(U..U?)>?) defined in java.util.concurrent.CompletableFuture[JavaMethodDescriptor@2e1b3fcd]
[INFO]      async       main    Decompiling CompletableFuture8154208674483070079.class using Fernflower...
[INFO]      async       main    Finished decompiling CompletableFuture8154208674483070079.class
[INFO]      async       main    Finished in 1947 ms

After the crash, dozens of warnings from LSP4J appear:

[WARNING]   client      org.ec  Unmatched cancel notification for request id 145
                        lipse.
                        lsp4j.
                        jsonrp
                        c.Remo
                        teEndp
                        oint  

[fwcd]

This problem is temporarily fixed through deactivation of the problematic feature:

https://github.com/fwcd/KotlinLanguageServer/blob/0da73a88c50dc19de0b83a83b3531dad853064db/src/main/kotlin/org/javacs/kt/definition/goToDefinition.kt#L22-L31

[fatfatson]

will it be fixed ?