errors after closing Schema Browser

I have a SB, Editor and Session Browser open. Start a query in Editor. Refresh Session Browser and got an Oracle error due to sessions-per-user. Close SB. Got 2 error popups. Here are their callstacks:

EurekaLog 7.5.1.0

Application:

1.1 Start Date : Tue, 6 Mar 2018 14:51:02 -0600
1.2 Name/Description: Toad.exe - (Toad® for Oracle)
1.3 Version Number : 13.0.0.57
1.4 Parameters :
1.6 Up Time : 1 hour(s), 5 minute(s), 57 second(s)

Exception:

2.1 Date : Tue, 6 Mar 2018 15:57:00 -0600
2.2 Address : 00000000044F7ED7
2.3 Module Name: Toad.exe - (Toad® for Oracle)
2.5 Type : EInvalidOperation
2.6 Message : Control ‘pnlDetail’ has no parent window.
2.7 ID : E5EE0000
2.8 Count : 1
2.11 Sent : 0

User:

3.2 Name: CHX

Active Controls:

4.1 Form Class : #32770
4.2 Form Text : Toad® for Oracle
4.3 Control Class: Button
4.4 Control Text : &OK

Computer:

5.2 Total Memory : 8545914880 (7.96 Gb)
5.3 Free Memory : 4698771456 (4.38 Gb)
5.4 Total Disk : 500105216000 (465.76 Gb)
5.5 Free Disk : 323766382592 (301.53 Gb)
5.6 System Up Time : 2 day(s), 10 hour(s), 44 minute(s), 52 second(s)
5.7 Processor : Intel® Core™ i7-2600 CPU @ 3.40GHz
5.8 Display Mode : \.\DISPLAY1: 1920x1200x32 96 DPI @ -1920x0, \.\DISPLAY2[PRIMARY]: 1920x1200x32 96 DPI @ 0x0
5.9 Display DPI : 96
5.10 Video Card : AMD Radeon HD 6350 (driver 8.850.0.0 - RAM 536870912)
5.11 Printer : Xerox WorkCentre 5845 PS (driver 6.1.7600.16385)
5.12 Virtual Machine:

Operating System:

6.1 Type : Microsoft Windows 7 (64 bit)
6.2 Build # : 7601 (6.1.7601.23403)
6.4 Non-Unicode Language: English (0409)
6.5 Charset/ACP : 0/1252
6.6 Install Language : English (0409)
6.7 UI Language : English (0409)

Steps to reproduce:

8.1 Text:

Call Stack Information:

|Methods |Details|Stack |Address |Module |Offset |Unit |Class |Procedure/Method |Line |

|*Exception Thread: ID=7324; Parent=0; Priority=-2 |
|Class=; Name=MAIN |
|DeadLock=0; Wait Chain= |

Comment=
7FFFFFFE
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040

EurekaLog 7.5.1.0

Application:

1.1 Start Date : Tue, 6 Mar 2018 14:51:02 -0600
1.2 Name/Description: Toad.exe - (Toad® for Oracle)
1.3 Version Number : 13.0.0.57
1.4 Parameters :
1.6 Up Time : 1 hour(s), 5 minute(s), 55 second(s)

Exception:

2.1 Date : Tue, 6 Mar 2018 15:56:58 -0600
2.2 Address : 00000000041AA578
2.3 Module Name: Toad.exe - (Toad® for Oracle)
2.5 Type : EAccessViolation
2.6 Message : Access violation at address 00000000041AA578 in module ‘Toad.exe’. Read of address 0000000000000001.
2.7 ID : AD8B0000
2.8 Count : 1
2.11 Sent : 0

User:

3.2 Name: CHX

Active Controls:

4.1 Form Class : TSessionBrowserForm
4.2 Form Text : R$DALE_ROESCHLEY@TOSS2 (toss2:emerald3) - Session Browser
4.3 Control Class: TcxTreeList
4.4 Control Text :

Computer:

5.2 Total Memory : 8545914880 (7.96 Gb)
5.3 Free Memory : 4703817728 (4.38 Gb)
5.4 Total Disk : 500105216000 (465.76 Gb)
5.5 Free Disk : 323766239232 (301.53 Gb)
5.6 System Up Time : 2 day(s), 10 hour(s), 44 minute(s), 50 second(s)
5.7 Processor : Intel® Core™ i7-2600 CPU @ 3.40GHz
5.8 Display Mode : \.\DISPLAY1: 1920x1200x32 96 DPI @ -1920x0, \.\DISPLAY2[PRIMARY]: 1920x1200x32 96 DPI @ 0x0
5.9 Display DPI : 96
5.10 Video Card : AMD Radeon HD 6350 (driver 8.850.0.0 - RAM 536870912)
5.11 Printer : Xerox WorkCentre 5845 PS (driver 6.1.7600.16385)
5.12 Virtual Machine:

Operating System:

6.1 Type : Microsoft Windows 7 (64 bit)
6.2 Build # : 7601 (6.1.7601.23403)
6.4 Non-Unicode Language: English (0409)
6.5 Charset/ACP : 0/1252
6.6 Install Language : English (0409)
6.7 UI Language : English (0409)

Steps to reproduce:

8.1 Text:

Call Stack Information:

|Methods |Details|Stack |Address |Module |Offset |Unit |Class |Procedure/Method |Line|

|*Exception Thread: ID=7324; Parent=0; Priority=-2 |
|Class=; Name=MAIN |
|DeadLock=0; Wait Chain= |

Comment=
7FFFFFFE
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040
00000040

Thanks Dale. That should be fixed next beta.