Coded Character Set problem in Adobe Photoshop Elements 2018

I use Adobe Photoshop Elements 18 to change all the photos in a folder from TIFF format to JPG using the option “Process Multiple Files” o saving individual files.

The photos in TIFF format have the Title field of the metadata with information like this:

“1980-04-dd DR Església de Sant Andrèu - Salardú - Naut Aran - Vall d'Aran - Lleida.”

Observing the output in JPG format I see that the information has been transformed into this:

“1980-04-dd DR Església de Sant Andrèu - Salardú - Naut Aran - Vall d'Aran - Lleida.”

Apparently, there is an unwanted change in the value of certain metadata fields when they are not normal characters.

In some pictures the error does not occur. I have observed two similar photos using ExifTool and I think the problem is that one of the occurrences of the "Coded Character Set: UTF8" is lost.

Correct photo:

---- IPTC ----

Coded Character Set             : UTF8

Coded Character Set             : UTF8

Application Record Version      : 45055

Caption-Abstract                : 1980-04-dd DR Vall de Ruda camí a Saburedo - Naut Aran - Vall d'Aran - Lleida.

Object Name                     : 1980-04-dd DR Vall de Ruda camí a Saburedo - Naut Aran - Vall d

Date Created                    : 2018:01:16

Time Created                    : 14:18:55+00:00

Wrong picture:

---- IPTC ----

Coded Character Set             : UTF8

Application Record Version      : 19427

Caption-Abstract                : 1980-04-dd DR Vall de Ruda camí a Saburedo - Naut Aran - Vall d'Aran - Lleida.

Date Created                    : 2018:01:16

Time Created                    : 14:18:54

What I can do?