Component used: WorkManager Multiprocess
Version used: 2.5.0-alpha02
Devices/Android versions reproduced on: N/A

Default process name shouldn't be Context.getPackageName() but Context.getApplicationInfo().processName:

/**
 * The name of the process this application should run in.  From the
 * "process" attribute or, if not set, the same as
 * <var>packageName</var>.
 */
public String processName;

Current androidx.work.impl.utils.ProcessUtils:

/**
 * @return {@code true} when {@link WorkManager} is running in the configured app process.
 */
public static boolean isDefaultProcess(
        @NonNull Context context,
        @NonNull Configuration configuration) {

    String processName = getProcessName(context);
    if (!TextUtils.isEmpty(configuration.getDefaultProcessName())) {
        return TextUtils.equals(processName, configuration.getDefaultProcessName());
    } else {
        return TextUtils.equals(processName, context.getPackageName());
    }
}

Suggested fix:

/**
 * @return {@code true} when {@link WorkManager} is running in the configured app process.
 */
public static boolean isDefaultProcess(
        @NonNull Context context,
        @NonNull Configuration configuration) {

    String processName = getProcessName(context);
    if (!TextUtils.isEmpty(configuration.getDefaultProcessName())) {
        return TextUtils.equals(processName, configuration.getDefaultProcessName());
    } else {
        return TextUtils.equals(processName, context.getApplicationInfo().processName);
    }
}