diff --git a/tests/bugs/gh_7141_test.py b/tests/bugs/gh_7141_test.py
new file mode 100644
index 00000000..1f649216
--- /dev/null
+++ b/tests/bugs/gh_7141_test.py
@@ -0,0 +1,139 @@
+#coding:utf-8
+
+"""
+ID:          issue-7141
+ISSUE:       https://github.com/FirebirdSQL/firebird/issues/7141
+TITLE:       Services manager breaks long lines into 1023 bytes portions when using isc_info_svc_line in Service::query()
+DESCRIPTION:
+    Test invokes fbsvcmgr utility with requirement to start sepaarate trace session which will have long name.
+    This name is stored in variable LONG_NAME_OF_TRACE_SESSION and its maximal len currently is 16254.
+    Then we try to find this name in two ways:
+        * using act.connect_server().trace.sessions.items();
+        * using fbsvcmgr action_trace_list.
+    Both way must return info which contains <LONG_NAME_OF_TRACE_SESSION> without line breaking (this is what was fixed).
+NOTES:
+    Confirmed bug on 4.0.1.2735, 3.0.10.33570: name of session did contain LF characters in its middle points.
+    Confirmed problem on 5.0.0.418 - but only for console FB utility (fbsvcmgr), and NOT for usage firebird-QA framework
+    (it causes BUGCHECK "decompression overran buffer (179), file: sqz.cpp line: 293" on test teardown phase).
+    Checked on 6.0.0.363, 5.0.1.1408, 4.0.5.3103, 3.0.12.33744
+"""
+
+import pytest
+import platform
+import re
+from firebird.qa import *
+from pathlib import Path
+import subprocess
+import time
+
+#db = db_factory(async_write = False)
+db = db_factory()
+act = python_act('db')
+
+tmp_trace_cfg = temp_file('test_trace_7141.cfg')
+tmp_trace_log = temp_file('test_trace_7141.log')
+
+MAX_WAIT_FOR_TRACE_STOP = 10
+TRC_SESSION_NAME_PREFIX = 'gh_7141_'
+TRC_SESSION_NAME_MAX_LEN = 16254
+
+# 65000 100000 -->  FileNotFoundError: [WinError 206]  The filename or extension is too long // in localized form!
+# 32000  --> AssertionError: Could not find trace session to be stopped in {act.connect_server().trace.sessions.items()=} // None
+LONG_NAME_OF_TRACE_SESSION = (TRC_SESSION_NAME_PREFIX * 10000000)[:TRC_SESSION_NAME_MAX_LEN]
+EXPECTED_MSG1 = 'Success: found trace session name in act.connect_server().trace.sessions.items()'
+EXPECTED_MSG2 = 'Success: found trace session name in the result of fbsvcmgr action_trace_list'
+
+@pytest.mark.trace
+@pytest.mark.version('>=3.0.10')
+def test_1(act: Action, tmp_trace_cfg: Path, tmp_trace_log: Path, capsys):
+
+    trace_txt = f"""
+        database=%[\\\\/]{act.db.db_path.name}
+        {{
+            enabled = true
+            log_initfini = false
+        }}
+    """
+
+    tmp_trace_cfg.write_text(trace_txt)
+    trace_session_id = -1
+    trace_session_nm = ''
+
+    with tmp_trace_log.open('w') as f_log:
+        # EXPLICIT call of FB utility 'fbsvcmgr':
+        p = subprocess.Popen( [ act.vars['fbsvcmgr'],
+                                'localhost:service_mgr',
+                                'user', act.db.user,
+                                'password', act.db.password,
+                                'action_trace_start',
+                                'trc_name', LONG_NAME_OF_TRACE_SESSION,
+                                'trc_cfg', tmp_trace_cfg
+                              ], 
+                              stdout = f_log, stderr = subprocess.STDOUT
+                            )
+        time.sleep(1.1)
+
+        q1 = subprocess.run( [ act.vars['fbsvcmgr'],
+                              'localhost:service_mgr',
+                              'user', act.db.user,
+                              'password', act.db.password,
+                              'action_trace_list',
+                            ], 
+                            stdout = f_log, stderr = subprocess.STDOUT
+                         )
+
+        assert q1.returncode == 0
+
+        with act.connect_server() as srv:
+            # K = 1
+            # V = TraceSession(id=1, user='SYSDBA', timestamp=..., name=<LONG_NAME_OF_TRACE_SESSION>, flags=['active', ' trace'])
+            for k,v in srv.trace.sessions.items():
+                if v.flags[0] == 'active' and v.name.startswith(TRC_SESSION_NAME_PREFIX):
+                    trace_session_id = v.id
+                    trace_session_nm = v.name
+            
+        assert trace_session_id > 0, f'Could not find trace session to be stopped in {act.connect_server().trace.sessions.items()=}'
+
+        q2 = subprocess.run( [ act.vars['fbsvcmgr'],
+                              'localhost:service_mgr',
+                              'user', act.db.user,
+                              'password', act.db.password,
+                              'action_trace_stop',
+                              'trc_id', str(trace_session_id)
+                            ], 
+                            stdout = f_log, stderr = subprocess.STDOUT,
+                            timeout = MAX_WAIT_FOR_TRACE_STOP
+                         )
+
+        time.sleep(1.1)
+        if not p.poll():
+            p.terminate()
+        assert q2.returncode == 0
+    
+    if trace_session_nm == LONG_NAME_OF_TRACE_SESSION:
+        print(EXPECTED_MSG1)
+    else:
+        print('UNEXPECTED. COULD NOT FIND trace session name in in act.connect_server().trace.sessions.items()')
+
+    p_prefix_in_list = re.compile(f'name(:)?\\s+{TRC_SESSION_NAME_PREFIX}', re.IGNORECASE)
+
+    found_in_trc_list = False
+    with tmp_trace_log.open('r') as f_log:
+        for line in f_log:
+            #if p_prefix_in_list.search(line):
+            if LONG_NAME_OF_TRACE_SESSION in line:
+                found_in_trc_list = True
+                print(EXPECTED_MSG2)
+                break
+
+    if not found_in_trc_list:
+        print('Check result of fbsvcmgr action_trace_list:')
+        with tmp_trace_log.open('r') as f:
+            print(f.read())
+
+    act.expected_stdout = f"""
+        {EXPECTED_MSG1}
+        {EXPECTED_MSG2}
+    """
+    act.stdout = capsys.readouterr().out
+    assert act.clean_stdout == act.clean_expected_stdout