Windows: Watching multiple builds

The docs say multiple builds in one file should be fine (under "Building multiple products at once"). While building works without issues, running --watch on such a build file currently streams a bunch of errors (whereas a single build watches fine):

Wrote dist/server.js (0B, 66.42ms)
Watching files for changes...
Unhandled promise rejection: Error: ENOENT: no such file or directory, open 'dist\.esbuild.ox0ayt1u7797gfpoxjymrn227jid09s.meta.json'
    at Object.openSync (fs.js:462:3)
    at Object.readFileSync (fs.js:364:35)
    at Be ...\node_modules\estrella\<estrella>\util.js:129:16)
    at y ...\node_modules\estrella\<estrella>\estrella.js:754:23)
    at i ...\node_modules\estrella\<estrella>\watch\watch.ts:52:25)
    at Object.nl ...\node_modules\estrella\<estrella>\watch\watch.ts:99:3)
    at rn ...\node_modules\estrella\<estrella>\estrella.js:768:23)
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
PS ...> events.js:292    
      throw er; // Unhandled 'error' event
      ^

Error: EPIPE: broken pipe, write
    at Socket._write (internal/net.js:54:25)
    at doWrite (_stream_writable.js:403:12)
    at writeOrBuffer (_stream_writable.js:387:5)
    at Socket.Writable.write (_stream_writable.js:318:11)
    at Object.write ...\node_modules\typescript\lib\tsc.js:3471:36)
    at Object.onWatchStatusChange ...\node_modules\typescript\lib\tsc.js:88582:24)
    at reportWatchDiagnostic ...\node_modules\typescript\lib\tsc.js:89177:22)
    at Object.createWatchProgram ...\node_modules\typescript\lib\tsc.js:88937:9)
    at createWatchOfConfigFile ...\node_modules\typescript\lib\tsc.js:91126:19)
    at executeCommandLineWorker ...\node_modules\typescript\lib\tsc.js:90939:24)
Emitted 'error' event on Socket instance at:
    at errorOrDestroy (internal/streams/destroy.js:108:12)
    at onwriteError (_stream_writable.js:418:5)
    at onwrite (_stream_writable.js:445:5)
    at Socket._write (internal/net.js:58:14)
    at doWrite (_stream_writable.js:403:12)
    [... lines matching original stack trace ...]
    at reportWatchDiagnostic ...\node_modules\typescript\lib\tsc.js:89177:22) {
  errno: 'EPIPE',
  syscall: 'write',
  code: 'EPIPE'
}
events.js:292
      throw er; // Unhandled 'error' event
      ^

Error: EPIPE: broken pipe, write
    at Socket._write (internal/net.js:54:25)
    at doWrite (_stream_writable.js:403:12)
    at writeOrBuffer (_stream_writable.js:387:5)
    at Socket.Writable.write (_stream_writable.js:318:11)
    at Object.write ...\node_modules\typescript\lib\tsc.js:3471:36)
    at Object.onWatchStatusChange ...\node_modules\typescript\lib\tsc.js:88582:24)
    at reportWatchDiagnostic ...\node_modules\typescript\lib\tsc.js:89177:22)
    at Object.createWatchProgram ...\node_modules\typescript\lib\tsc.js:88937:9)
    at createWatchOfConfigFile ...\node_modules\typescript\lib\tsc.js:91126:19)
    at executeCommandLineWorker ...\node_modules\typescript\lib\tsc.js:90939:24)
Emitted 'error' event on Socket instance at:
    at errorOrDestroy (internal/streams/destroy.js:108:12)
    at onwriteError (_stream_writable.js:418:5)
    at onwrite (_stream_writable.js:445:5)
    at Socket._write (internal/net.js:58:14)
    at doWrite (_stream_writable.js:403:12)
    [... lines matching original stack trace ...]
    at reportWatchDiagnostic ...\node_modules\typescript\lib\tsc.js:89177:22) {
  errno: 'EPIPE',
  syscall: 'write',