Issues with keywording while switching between photos

This is a plugin from the NIK Collection. I disabled all plugins except NLP and restarted the application. The situation has not changed.

After reading the questions, tips, and comments on this post, I could summarize as follows. Now the process of saving keywords inside the files for some reason takes a few seconds (4-5). It is during this process that the main oddities occur. In addition to the bugs with the input fields, I have, for example, the function of adding to and removing from Quick Collection does not work for a few seconds after inserting keywords. It's as if LR loses some of the functionality during this time. As soon as the save ends - all functionality comes back in order.
In principle, I do not mind, I can wait. But the problem is that this hasn't happened before.

I don't recognize the "plugin parameters" plugin. What does it do? What happens if you disable it?

I have plugins, indeed.

Sys info:

Lightroom Classic version: 12.0.1 [ 202210260744-9e008017 ]
License: Creative Cloud
Language setting: en
Operating system: Mac OS 12
Version: 12.6.1 [21G217]
Application architecture: x64
Logical processor count: 16
Processor speed: 2,4GHz
SqLite Version: 3.36.0
Built-in memory: 65 536,0 MB
Real memory available to Lightroom: 65 536,0 MB
Real memory used by Lightroom: 11 391,7 MB (17,3%)
Virtual memory used by Lightroom: 63 656,2 MB
Memory cache size: 3 040,4MB
Internal Camera Raw version: 15.0 [ 1261 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 892MB / 32767MB (2%)
Camera Raw real memory: 901MB / 65536MB (1%)
Standard Preview Size: 1440 pixels
Displays: 1) 4096x2560

Graphics Processor Info:
Metal: AMD Radeon Pro 5500M
Init State: GPU for Export supported by default
User Preference: GPU for Export enabled

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/galxcom/Pictures/Lightroom/Lightroom Catalog-v12.lrcat
Settings Folder: /Users/galxcom/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Flickr
4) HDR Efex Pro 2
5) Negative Lab Pro
6) Nikon Tether Plugin
7) Plugin Parameters

Config.lua flags: None

It looks like the fields are very slow to update for you. I tried reproducing this with copied keywords (I just copied and pasted from a note) but can't get the behavior you show where the caption becomes sticky. Do you have any plugins installed on your machine? Show the output from System Info (help menu).

Well.. the thing is that I do totally the same steps as I've been doing a year ago and earlier when everything worked always pretty fast + I've never had these glitchy wandering fields from one photo to another. That's why for me it looks like a 100% bug and I am trying to report this as a bug since I've been using LR for years.

Multiple images highlighted together, or just one? – Just one.

Do you have AutoSync turned on for the Library module? – Nope, it is turned off and those buttons are even disabled for me – probably you could see on the video capture. 

Are you working with the Library screen in Grid view or Loupe view? – Both but mostly in Loupe.

... sounds more like use of the Metadata panel, than Keywording – I use two fields from Metadata + Keywording. I need these three fields which I've shown on the video screen capture.

Multiple images highlighted together, or just one? Do you have AutoSync turned on for the Library module? (toggle switch bottom of right side panels, on the left). Are you working with the Library screen in Grid view or Loupe view?

Also, from your mention of "photos that don't have certain fields filled in" that sounds more like use of the Metadata panel, than Keywording. If so: please check whether the new switch in the Metadata panel is set to "Targeted photo", or "Selected photos" - I may have the exact terminology wrong there.

Try not pasting in keywords at all. Try typing them in, Any difference?

There's no plugin opened. IMStocker is opened in the window of Google Chrome. Actually, if I paste keywords from anywhere (even a notepad) the result will be the same.

That third party application IMStocker, Keyworder  (plug-in?) Perhaps it is the issue? Any new updates to it?

What happens if you do not use it?