I am still getting these crashes. Here is the latest core dump:

#0  zend_mm_free_heap (ptr=0x138e6f0, heap=0x7f5a36e00040) at /install/php-7.1.9/Zend/zend_alloc.c:1374
        chunk = 0x1200000
        page_num = 398
        info = <optimized out>
        page_offset = 1631984
#1  _efree (ptr=0x138e6f0) at /install/php-7.1.9/Zend/zend_alloc.c:2433
No locals.
#2  0x00007f5a836be217 in zend_string_release (s=<optimized out>) at /install/php-7.1.9/Zend/zend_string.h:272
No locals.
#3  zend_hash_destroy (ht=0x18fa570) at /install/php-7.1.9/Zend/zend_hash.c:1248
        p = 0x7f5a141800c0
        end = 0x7f5a141800e0
#4  0x00007f5a83755c39 in destroy_php_config (data=<optimized out>)
    at /install/php-7.1.9/sapi/apache2handler/apache_config.c:201
        d = <optimized out>
#5  0x00007f5a84b623fe in run_cleanups (cref=<optimized out>) at memory/unix/apr_pools.c:2352
        c = <optimized out>
#6  apr_pool_destroy (pool=0x18f8678) at memory/unix/apr_pools.c:814
        active = <optimized out>
        allocator = <optimized out>
#7  0x000000000044a436 in remove_empty_buckets (bb=bb@entry=0x7f5a5005ceb0) at core_filters.c:720
        bucket = 0x18f0548
#8  0x000000000044aae8 in setaside_remaining_output (f=f@entry=0x7f5a5005ccc8, ctx=ctx@entry=0x7f5a5005ce10, 
    bb=bb@entry=0x7f5a5005ceb0, c=<optimized out>, c=<optimized out>) at core_filters.c:584
No locals.
#9  0x000000000044b52e in ap_core_output_filter (f=0x7f5a5005ccc8, new_bb=0x7f5a5005ceb0) at core_filters.c:568
        c = <optimized out>
        net = 0x7f5a5005cc80
        ctx = 0x7f5a5005ce10
        bb = 0x7f5a5005ceb0
        bucket = <optimized out>
        next = <optimized out>
        flush_upto = <optimized out>
        bytes_in_brigade = 0
        non_file_bytes_in_brigade = <optimized out>
        eor_buckets_in_brigade = <optimized out>
        morphing_bucket_in_brigade = 0
        rv = <optimized out>
#10 0x0000000000463bc3 in ap_process_request_after_handler (r=0x18f86f0) at http_request.c:358
        bb = 0x7f5a5005ceb0
        b = <optimized out>
        c = 0x7f5a5005c878
        rv = <optimized out>
#11 0x0000000000461251 in ap_process_http_async_connection (c=0x7f5a5005c878) at http_core.c:154
        r = 0x18f86f0
        cs = 0x7f5a5005c850
#12 ap_process_http_connection (c=0x7f5a5005c878) at http_core.c:248
No locals.
#13 0x0000000000459390 in ap_run_process_connection (c=0x7f5a5005c878) at connection.c:42
        pHook = 0x1507588
        n = 4
        rv = 920649792
#14 0x000000000046cfee in process_socket (my_thread_num=2, my_child_num=1, cs=0x7f5a5005c7e8, sock=<optimized out>, 
    p=<optimized out>, thd=<optimized out>) at event.c:945
        c = 0x7f5a5005c878
        sbh = 0x7f5a5005c7d0
        conn_id = <optimized out>
        rc = <optimized out>
#15 worker_thread (thd=<optimized out>, dummy=<optimized out>) at event.c:1849
        ti = <optimized out>
        process_slot = 1
        thread_slot = 2
        csd = 0x7f5a5005c5e0
        cs = 0x0
        ptrans = 0x7f5a5005c558
        rv = <optimized out>
        is_idle = 0
        te = 0x0
#16 0x00007f5a844f2df5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#17 0x00007f5a8401c1ad in clone () from /lib64/libc.so.6
No symbol table info available.

Please know that I no longer see segfaults since switching to PHP-FPM. My previous configuration included mod_php (w/ ZTS) with Apache event mpm. Although this Wiki (https://wiki.apache.org/httpd/php) states that they are compatible, I read a few blogs stating that PHP thread safety is NOT AT ALL stable.

Is this still an issue with any of the actively supported PHP
versions[1]?

[1] <https://www.php.net/supported-versions.php>

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.