Jabref 5.1 freezes frequently in Catalina 10.15

In the last month or so, I found that Jabref 5.1 freezes more frequently in Catalina 10.15. I have updated my computer to the latest version. Is there a reason for this?
Here is the report from the latest incident today:

Date/Time: 2020-09-24 13:37:27 +0530
End time: 2020-09-24 13:40:09 +0530
OS Version: Mac OS X 10.15.6 (Build 19G2021)
Architecture: x86_64h
Report Version: 29
Incident Identifier: 1C2FD0C2-462D-4412-BA0C-E654BD377B39

Data Source: Microstackshots
Shared Cache: 0x5403000 E1A25A3A-AB86-304C-B1F9-1A04170530F4

Command: JabRef
Path: /Applications/JabRef.app/Contents/MacOS/JabRef
Identifier: org.jabref
Version: 5.1.60000 (5.1.60000)
PID: 38489

Event: cpu usage
Action taken: none
CPU: 90 seconds cpu time over 162 seconds (56% cpu average), exceeding limit of 50% cpu over 180 seconds
CPU limit: 90s
Limit duration: 180s
CPU used: 90s
CPU duration: 162s
Duration: 162.08s
Duration Sampled: 158.93s
Steps: 289

Hardware model: MacBookPro16,1
Active cpus: 12
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev

Heaviest stack for the target process:
62 ??? [0xe02f36fd000387b0]
34 ??? [0x11c539e6d]

Powerstats for: JabRef [38489]
UUID: A1ADBDA7-5D4D-372C-ABF5-2E075FD10169
Path: /Applications/JabRef.app/Contents/MacOS/JabRef
Architecture: x86_64
Footprint: 425.62 MB -> 1533.04 MB (+1107.42 MB)
Pageins: 123 pages
Start time: 2020-09-24 13:37:30 +0530
End time: 2020-09-24 13:40:09 +0530
Num samples: 289 (100%)
CPU Time: 1017.291s
Primary state: 118 samples Frontmost App, Non-Suppressed, User mode, Effective Thread QoS Default, Requested Thread QoS Default, Override Thread QoS Unspecified
User Activity: 0 samples Idle, 289 samples Active
Power Source: 289 samples on Battery, 0 samples on AC
62 ??? [0xe02f36fd000387b0]
34 ??? [0x11c539e6d]
14
11 <Non-Frontmost App, Suppressed>
10 ??? [0x11c539eca]
3
2 <Non-Frontmost App, Suppressed>
10 ??? [0x11c539eb7]
3
1 <Non-Frontmost App, Suppressed>
6 ??? [0x11c813323]
4
2 ??? [0x11c81338a]
1
1 <Non-Frontmost App, Suppressed>
50 ??? [0xe02c57aa000387b0]
30 ??? [0x11c539e6d]
12
7 <Non-Frontmost App, Suppressed>
8 ??? [0x11c813323]
4 <Non-Frontmost App, Suppressed>
3
7 ??? [0x11c539eca]
2 <Non-Frontmost App, Suppressed>
1
3 ??? [0x11c539eb7]
2
1 ??? [0x11c81338a]
1
1 ??? [0x11c539ec2]
1
30 ??? [0xe026e906000387b0]
21 ??? [0x11c539e6d]
5
4 <Non-Frontmost App, Suppressed>
5 ??? [0x11c539eca]
2
4 ??? [0x11c539eb7]
2 <Non-Frontmost App, Suppressed>
26 ??? [0xe02e3b49000387b0]
20 ??? [0x11c539e6d]
7 <Non-Frontmost App, Suppressed>
6
5 ??? [0x11c539eb7]
3
1 ??? [0x11c539eca]
1
23 ??? [0x11c528e95]
9
4 <Non-Frontmost App, Suppressed>
19 ??? [0x11c528e7c]
7
6 <Non-Frontmost App, Suppressed>
17 ??? [0x11c528e9c]
5
4 <Non-Frontmost App, Suppressed>