Preset modifying multiple objects overwriting distinct tag values

[gaben]

What steps will reproduce the problem?

1. Have two building=yes with different building:levels.
2. Select both
3. Open preset editor, it will show

Levels: <different>

4. Press apply
5. Check building:levels values

What is the expected result?

Two buildings with different building:levels values, as it wasn't changed.

What happens instead?

The building:levels values overwritten with the string <different>.

Please provide any additional information below. Attach a screenshot if possible.

Previous stable build (r17833) works fine.

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2021-05-27 19:45:08 +0200 (Thu, 27 May 2021)
Build-Date:2021-05-28 01:31:01
Revision:17915
Relative:URL: ^/trunk

Identification: JOSM/1.5 (17915 en_GB) Windows 10 64-Bit
OS Build number: Windows 10 Pro for Workstations 2009 (19043)
Memory Usage: 2428 MB / 7266 MB (309 MB allocated, but free)
Java version: 1.8.0_291-b10, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1920×1200 (scaling 1.00×1.00)
Maximum Screen Size: 1920×1200
Best cursor sizes: 16×16→32×32, 32×32→32×32
System property file.encoding: Cp1250
System property sun.jnu.encoding: Cp1250
Locale info: hu_HU
Numbers with default locale: 1234567890 -> 1234567890
Dataset consistency test: No problems found

[gaben]

I didn't check but maybe regression from r17877?

[gaben]

Regression between [17860:17878].

[simon04]

In 17919/josm:

fix #20952, see #20851 - Revert "Tagging presets: value_template="..." for <combo>"

This reverts commit r17877

[simon04]

r17919 will be released as hotfix.

[gaben]

Thank you! :)