crash drmemory 2.5 on ubuntu 20.04

**Describe the bug**
A clear and concise description of what the bug is.

I have a small application using Qt, compiled in 64 bit using gcc 9.3

each time I run it with

~/projects/DrMemory-Linux-2.5.0/bin64/drmemory -- ./OAQmlTest --OA /home/u19809/projects/AP/Runtimes/build-OA-Desktop_Qt_5_15_4_gcc_64-Debug/runtime/plugins

it starts reporting and after a while it crashes with an internal error (lines before are just application stack backtraces)

**To Reproduce**
Steps to reproduce the behavior:
1. Pointer to a minimized application (ideally the source code for it and instructions on which toolchain it was built with).
2. Precise command line for running the application.
3. Exact output or incorrect behavior.

Please also answer these questions drawn from https://drmemory.org/page_help.html#sec_narrow :
- Does the problem go away when running in light mode (pass `-light` to Dr. Memory)?
- Does the problem go away when running with the options `-leaks_only -no_count_leaks -no_track_allocs`?
- Does the problem go away when running under plain DynamoRIO? Do this by running `dynamorio/bin32/drrun -- ` or `dynamorio/bin64/drrun -- ` depending on the bitwidth of your applicaiton. (Ignore warnings about "incomplete installation".)
- What happens with the debug version of Dr. Memory and of its underlying engine DynamoRIO? Try this by passing `-debug -dr_debug -pause_at_assert`. Are any messages reported?

**Expected behavior**
not crashing :)

**Screenshots or Pasted Text**
N/A

**Versions**
- What version of Dr. Memory are you using? 2.5
- Does the latest build from
tried with build 18967 but still crash
- What operating system version are you running on? ("Windows 10" is *not* sufficient: give the release number.)
-ubuntu 20.04 kernel 5.4.0-90
- Is your application 32-bit or 64-bit?

**Additional context**
[txt.log](https://github.com/DynamoRIO/drmemory/files/7740340/txt.log)