Multiple extra compilers with same input are broken for VS projects

"D:\dev\qt\dev-x86_64\qtbase\examples\dbus\chat\chat.vcxproj" (Build target) (1) ->
(CustomBuild target) ->
  C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.tar
gets(200,5): error MSB4018: The "GetOutOfDateItems" task failed unexpectedly. [D:\dev\qt\dev-x86_64\qtbase\examples\
dbus\chat\chat.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targe
ts(200,5): error MSB4018: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dict
ionary. [D:\dev\qt\dev-x86_64\qtbase\examples\dbus\chat\chat.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targe
ts(200,5): error MSB4018:    at System.Collections.Generic.Dictionary`2.get_Item(TKey key) [D:\dev\qt\dev-x86_64\qtb
ase\examples\dbus\chat\chat.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targe
ts(200,5): error MSB4018:    at Microsoft.Build.CPPTasks.GetOutOfDateItems.CheckIfItemDependsOnOtherItemOutputs(ITas
kItem item, Dictionary`2 itemDependencies, Dictionary`2 allOutputs, HashSet`1 outOfDateItemHash) [D:\dev\qt\dev-x86_
64\qtbase\examples\dbus\chat\chat.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targe
ts(200,5): error MSB4018:    at Microsoft.Build.CPPTasks.GetOutOfDateItems.Execute() [D:\dev\qt\dev-x86_64\qtbase\ex
amples\dbus\chat\chat.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targe
ts(200,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost
.Execute() [D:\dev\qt\dev-x86_64\qtbase\examples\dbus\chat\chat.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targe
ts(200,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext() [D:\de
v\qt\dev-x86_64\qtbase\examples\dbus\chat\chat.vcxproj]

QT += dbus
...
DBUS_ADAPTORS += org.example.chat.xml
DBUS_INTERFACES += org.example.chat.xml

    $${group}_header.commands = $$QMAKE_QDBUSXML2CPP $$hdr_flags $$qdbusxml2cpp_option ${QMAKE_FILE_OUT}: ${QMAKE_FILE_IN}
    $${group}_header.depends += $$QMAKE_QDBUSXML2CPP_EXE
    $${group}_header.output = ${QMAKE_FUNC_FILE_IN_qdbusOutputBasename}_$${dbus_type}.h
    $${group}_header.name = DBUSXML2CPP $${dbus_TYPE} HEADER ${QMAKE_FILE_IN}
    $${group}_header.variable_out = $${GROUP}_HEADERS
    $${group}_header.input = $$input_list

    $${group}_source.commands = $$QMAKE_QDBUSXML2CPP -i ${QMAKE_FILE_OUT_BASE}.h $$src_flags $$qdbusxml2cpp_option :${QMAKE_FILE_OUT} ${QMAKE_FILE_IN}
    $${group}_source.depends += $$QMAKE_QDBUSXML2CPP_EXE
    $${group}_source.output = ${QMAKE_FUNC_FILE_IN_qdbusOutputBasename}_$${dbus_type}.cpp
    $${group}_source.name = DBUSXML2CPP $${dbus_TYPE} SOURCE ${QMAKE_FILE_IN}
    $${group}_source.variable_out = SOURCES
    $${group}_source.input = $$input_list
    $${group}_source.depends += $$eval($${group}_header.output)   # this actually belongs to the object file