System and IINA version:

• macOS 12.6.7
• IINA 1.3.2 Build 135

Expected behavior:

See Actual behavior, expecting the thumbnail to show.

Actual behavior:

When hovering on the progress bar when a video shared using SMB (from another Mac in my local network) is playing, and the related option enabled, no thumbnail is shown. Thumbnail preview works with the exact same video playing locally.

Steps to reproduce:

Connect to a shared file server (in my case using SMB), enable Thumbnail Preview, play a video (in my case an MOV video), hover on the progress bar.

• MPV does not have this problem.

How often does this happen?

Always.