Erratic behavior in accessing subdirs on Windows

Consider Stack Overflow for getting support using TensorBoard - they have a larger community with better searchability:

https://stackoverflow.com/questions/tagged/tensorboard

For bug reports, please include the following:

• TensorBoard version (from pip package, also printed out when running tensorboard)
  1.10.0
• TensorFlow version if different from TensorBoard
  1.10.0
• OS Platform and version (e.g., Linux Ubuntu 16.04)
  Windows 8
• Python version (e.g. 2.7, 3.5)
  3.5.5
• For browser-related issues:
  • Browser type and version (e.g. Chrome 64.0.3282.140)
    Chrome
  • Screenshot if it's a visual issue

Please describe the bug as clearly as possible, and if possible provide a minimal example (code, data, and/or command line) to reproduce the issue. Thanks!

• I've multiple 3 subdirs containing .events file under a parent directory sh at C:\.
• Launching, tensorboard in any way (from 'C:' or 'C:\sh') and pointing to sh parent dir (correctly) starts the tensorboard server at 6006 and in the console on the list of file names shows all the subdirs but never shows all three in the plots.
• Sometimes, it shows one of them or sometimes two (and I've seen all the possible combinations of pairs out of three on multiple restarts of the server) but never all of them.
• It works fine if I point it directly to a subdir, showing just one plot.

I've also tried switching to Firefox or downgrading to 0.x but no use. It'll be great if someone can help me out. A possible caveat might be that each of the three events file is pretty big ~90 MB.

Reproduce the report with TensorBoard 1.10.0 and TensorFlow 1.10.0 on Windows 8 using Python 3.5.5: place three roughly 90 MB event files in separate subdirectories under C:\sh and launch TensorBoard against the parent directory. Compare the parent-directory view with direct views of each subdirectory; done means all three plots load reliably together.