As I read that there is a new info field %_tool% I wanted to try it.
I created a new column with the value %_tool% but a value showed only for the file that was currently the selected.
All the other files had no data in this new column - not until I moved the selection to another file.
F5 re-read the files, but the column with %_tool% remained empty for those files that had not been selected yet.
I had the library switched on during these attempts.
So I switches the library off which leads to a restart of MP3tag, the files were read again - still no display in the column tool, not until the file was selected.
My expectation would be that any rereading of files would also reread the data for "tool" and not when the file gets the focus.
Only Ctrl-T got the data (Lame3.99r in this case)
Disabling the library results in reading the file information directly from the file. So you should see the contents of the %_tool% info field for those files which have the LAME tag set. Can you confirm?
Enabling the library results in reading the file information from the libary (if present). So any file that has been read from the library needs either be read again via Ctrl+T or click on the file. This is the expected behavior, because the file modification date has not been changed.
I am running out of non-displaying files soon.
I just tried it again:
Files have been registered previously in the library:
Load files: no display of %_tool%
Switch off library in Tools>Options>Library, new start of MP3tag
Same files get loaded: still no display of %_tool%
A forced re-read with Ctrl-T for a wider selection of files leads to a display of %_tool%
Setting the selection to a file without display also retrieves the %_tool% information.
For the test I loaded a mere 170 files - could it be a problem with cache?
Edit: I tried it with a copy of the same set of files on a different computer (Windows 7 as opposed to W10 on the conspicious one) and MP3tag behaves just like it should and we both described as correct response:
With library, library is read and needs updating
No library: files are read and uptodate information is shown.
Why this is a local problem - I have not yet found it out. But it looks like a local one.
I quite agree: I have not yet found the reason resp. what the difference is.
Or wait: the other computer had a column definition
Value: %_codec% [%_tool%]
So it could be that the properties were already in the database ... no rubbish: this does not explain why the data is not shown when the database is switched off.
I don't know. And as it appears only on one PC (for now) ... it has to be something local.