[Bug]: Going backward/forward in a video doesn't go where it should

[awsms]

Guidelines

• I have encountered this bug in the latest release of FreeTube.
• I have encountered this bug in the official downloads of FreeTube.
• I have searched the issue tracker for open and closed issues that are similar to the bug report I want to file, without success.
• I have searched the documentation for information that matches the description of the bug I want to file, without success.
• This issue contains only one bug.

Describe the bug

I first encountered this issue with a version compiled from the latest commit, then successfully reproduced it with the latest beta build (0.22.0).

1. Launch a video in PiP mode
2. Use an external command to go backward/forward in the video (for example, playerctl --player playerctld position 5+)
3. Instead of going +/- x seconds from the current playback instant, it will go from the latest time the video was paused

Expected Behavior

I'm expecting the video playback to go at +/- x seconds from its current progression.

Issue Labels

inconsistent behavior

FreeTube Version

0.22.0

Operating System Version

EndeavourOS

Installation Method

AUR (Unofficial)

Primary API used

Local API

Last Known Working FreeTube Version (If Any)

No response

Additional Information

I can not 100% reproduce this issue, instead it happens 3 out of 4 times.
This issue never occurred before, happened for the first time ~ a week ago.
Reproduced in the AppImage official release, the AUR bin package, and the AUR git package.

Nightly Build

• I have encountered this bug in the latest nightly build.