subtitle disappear at full screen or maximized on TV UHD

on my pc, I have a monitor FHD in which all works great but when I pass the 2nd screen  ( a TV UHD), If I maximize it or put it to full screen, the subtitles disappear. I don't know what else to touch, searched and tried every option in the Subtitles menu
PD: subtitle is added, file.srt

Can you copy this log file?
Codec Tweak Tool > Generate Log

Codec Tweak Tool | Log file | Generated at 2021-05-17 13:25:23

#####  System Information  #####

OS:           Windows 10 Enterprise (10.00.19043) (x64)
CPU name:     Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
CPU details:  3192 MHz | 12 core(s) | Family 6 Model 158 Stepping 10
Memory:       16352 MB
Screen size: 1920x1080 (32bits) (60Hz), 3840x2160 (32bits) (60Hz)
GPU 1:        NVIDIA GeForce GTX 1050 Ti
             VendorID: 10de, DeviceID: 1c82, SubSys: 8c961462
GPU memory:   4096 MB
GPU driver:   nvldumdx.dll (Version 27.21.14.6627) (4-23-2021) (NV 466.27)
GPU 2:        AMD Radeon HD 5700 Series
             VendorID: 1002, DeviceID: 68b8
GPU driver:   ati2mtag_Legacy (Version 27.20.21001.7005) (4-1-2021)
Audio device: NVIDIA High Definition Audio
             VendorID: 10de, DeviceID: 0080
Audio driver: nvhda64v.sys (Version 1.3.38.40) (10-16-2020)

#####  K-Lite Codec Pack  #####

KLCP version: 16.1.2
KLCP type:    standard

Speaker conf: 2.0

MPC renderer: MPC VR
MPC subs:     ISR
MPC audio:    Internal Audio Renderer

#####  Decoder Settings #####

LAV Video:
H264=DXVA2CB HEVC=DXVA2CB VP9=DXVA2CB VC1=0 MPEG2=1 MPEG4=1 WMV3=0

LAV Audio:
MP3=1 AC3=B DTS=B DTSHD=1 EAC3=1 TRUEHD=1 AAC=1 Vorbis=1 LPCM=1 WMA=0

#####  DirectShow Filters (32-bit)  #####

Description:  Bandicam MPEG-1 Video Decoder
File name:    c:\program files (x86)\bandimpeg1\bdfilters.dll
CLSID:        {89C4B786-A490-4A3E-AA70-E6A8C61D3689}
Merit:        FF800001

Description:  Bandicam MPEG-1 Audio Decoder
File name:    c:\program files (x86)\bandimpeg1\bdfilters.dll
CLSID:        {E2E7539A-CECF-4A6A-B187-939943ECEF05}
Merit:        FF800001

(A total of 72 filters, 2 shown, 70 hidden)

#####  DirectShow Filters (64-bit)  #####

Description:  Bandicam MPEG-1 Video Decoder
File name:    c:\program files (x86)\bandimpeg1\bdfilters64.dll
CLSID:        {89C4B786-A490-4A3E-AA70-E6A8C61D3689}
Merit:        FF800001

Description:  Bandicam MPEG-1 Audio Decoder
File name:    c:\program files (x86)\bandimpeg1\bdfilters64.dll
CLSID:        {E2E7539A-CECF-4A6A-B187-939943ECEF05}
Merit:        FF800001

(A total of 71 filters, 2 shown, 69 hidden)

#####  ICM Class Manager (32-bit)  #####

(A total of 2 filters, 0 shown, 2 hidden)

#####  ICM Class Manager (64-bit)  #####

(A total of 2 filters, 0 shown, 2 hidden)

#####  Default source filters (32-bit)  #####

(A total of 54 default source filters, 0 shown, 54 hidden)

#####  Default source filters (64-bit)  #####

(A total of 54 default source filters, 0 shown, 54 hidden)

#####  ACM and VFW Codecs (32-bit)  #####

Description:  Bandi Motion Jpeg
ID:           vidc.mjpg
File name:    c:\windows\syswow64\bdmjpeg.dll

Description:  Bandi MPEG-1 Video
ID:           vidc.mpeg
File name:    c:\windows\syswow64\bdmpegv.dll

Description:  Bandi MPEG-1 Audio
ID:           msacm.bdmpeg
File name:    c:\windows\syswow64\bdmpega.acm

(A total of 17 codecs, 3 shown, 14 hidden)

#####  ACM and VFW Codecs (64-bit)  #####

Description:  Bandi Motion Jpeg
ID:           vidc.mjpg
File name:    c:\windows\system32\bdmjpeg64.dll

Description:  Bandi MPEG-1 Video
ID:           vidc.mpeg
File name:    c:\windows\system32\bdmpegv64.dll

Description:  Bandi MPEG-1 Audio
ID:           msacm.bdmpeg
File name:    c:\windows\system32\bdmpega64.acm

(A total of 16 codecs, 3 shown, 13 hidden)

#####  DirectX Media Objects (64-bit)  #####

(A total of 14 DMO, 0 shown, 14 hidden)

I see that you have two GPUs. Are both screens connected to the same GPU?

Do the subtitles still display after moving to the other screen, if you don't change the window size? Also what happens if you resize the window only a tiny bit?

It might be a bug in the video renderer. Try changing to another renderer:
MPC-HC options > Playback > Output > Video Renderer > EVR-CP

I just have the Nvidia (AMD is gone but it didn't have this problem), moving the player from one screen to another doesn't make the subtitles disappear, this happens after reaching a size and obviously at fullscreen
https://youtu.be/5JMnpDyGO0M


If I change the Video renderer as you suggested,
EVR: when I drop the file over the player says "fail to load subtitle file"
EVR (Customer presenter) which uses Internal Subtitle Renderer says: "Cannot render this file"

Use EVR (Customer presenter). You need to restart the player for the change to take effect.

I will contact the developers of MPC Video Renderer about this problem.

Having the same trouble, but using the EVR did the work, thanks.