I'm the one that reported it in the .88 thread. I have exactly the same problem as the OP. It seems that JRemote (or eos) is not getting the current track duration value from MC correctly - it then calculates a negative time remaining, which puts the progress slider all the way to the right. This causes a problem because if I want to seek to a certain position by tapping on the progress slider, the track simply starts from the beginning, then the slider goes to the right. Rinse and repeat. I've attached the same screenshot I showed in the 88 thread showing a negative time remaining value, which is what is causing the problem.
I am running Windows 10 Home x64 with all the latest updates. I've encountered the same problem with build 81 and 88. I am running a Samsung Galaxy S7 edge on verizon's network with android v7.0. I am simply using the remote (JRemote or eos) as a remote - meaning that my library exists on the PC and MC, and MC is rendering the audio on my PC - the android remote software is simply being used as a "remote" to control playback.
I have tried uninstalling and reinstalling the android remote apps, clearing all data and cache for the apps within android. Nothing fixes it. The exact same thing happens with both eos and JRemote, which leads me to think it is a bug with MC.
For me, the slider issue is almost persistent and exists a majority of the time I try to play back files, making seeking an impossibility most of the time. For me, this is a big issue because I frequently find myself wanting to replay a part of a song that I particularly liked, and I am simply unable to do so currently.
I have all the time in the world, so if anyone at JRiver would like help/assistance to replicate this problem and find a solution, please do contact me at the email address I registered with, or even here in the forums (I will try to frequent this forum for the near future). I will be more than happy to try anything, and I am a savvy computer and android user.
Thank you!
Edit: I also attached my System Info from the MC software.
Edit2: I'm sorry for the edit, but I wanted to clear up how/when this happens. If I just press play and let things go and don't touch anything, the problem doesn't show up much, if any. The problem constantly shows up when I start manually changing tracks.
Edit3: Holy crap I am bad at this! Some more info... if I use the BubbleUPNP DLNA app and set both the library and renderer to MC, it effectively acts as a remote only, since I have MC set up to play local files if found, which is what I play 100% of the time. In this setup, the problem does not happen - progress slider always works perfectly. I assume the app is communicating with MC purely with the DLNA protocol, which probably differs from how JRemote and eos communicate with it. This is a solution, though I have other, unrelated issues with the app and still highly prefer JRemote, or even eos.